That icon to be exact! We're doing the whole thing! There are a lot of images in the tutorial, a lot of layers and a lot of steps! So follow closely.This is for PSP8!! but it can basically be translated for PS.
1. We begin with this base which I probably found at hp_bases or somewhere like that.
If the base you are using needs to be sharpened, go ahead and sharpen it (Adjust > Sharpness > Sharpen) do not oversharpen your icon. Oversharpening can make your icon look like crap.
2. Duplicate your base. Set this layer to "Soft Light" and set the opacity to about 60-65% (I'm giving a range incase you want to play around with the opacity a bit, I'll give an opacity range for a few other layers as well, just play around with it though). I used 62%. You should have something just a bit darker than the original. That's what you want, you never want it to be too dark.
3. Create a new raster layer on the very top. Fill it with a dark blue colour, I used #001F32. Set the layer to "Exclusion" leave the opacity at 100%.
4. Create another new raster layer on the very top. Fill it with a beige colour, or a light yellow. I chose #F2EEDE. Set this layer to "Multiply" and keep the opacity at 100%.
5. Create another new raster and fill it with a gradient. I chose this gradient from crumblingwalls and I just left it vertical instead of making it diagonal. Set this layer to "Darken", opacity 100%. It will look odd -- but it gets better :).
6. Create a new raster layer on top again. Add another gradient. This time I'm using one from syndarys. Set this layer to "Overlay" and the opacity from 25-30%, I used 28%. The icon will still look odd.
7. Again, new raster on top. Fill it with a medium grey colour, I've used #52595C. Set it to "Soft Light" with the opacity at 100%. It still looks odd, but I promise we'll fix it :D.
8. Time for a texture brush. The one I've used is from teh_indy (I think). So we put the brush on a new layer! ALWAYS apply brushes on a new layer. They are much, much, much, much, MUCH easier to edit. I've used this brush in #72B6A5 and I set the layer to "Overlay" with 100% opacity.
9. Duplicate the brush layer you just made. Set the duplicate layer to "Multiply" with your opacity at 60%.
10. Next we apply another texture brush, on a new layer of course. This time we're using a brush by crumblingwalls. I applied the brush in white (#FFFFFF). Then we set the layer to "Overlay" opacity at 20-25%, I used 24%.
11. Next, we apply another texture brush -- on a new layer. Not sure who made this one, so if it's your brush let me know!! Whoever you are, you're credited in the resources. I applied the brush in #7298B6 and set the layer to "Multiply" with 60-65% opacity -- I used 62%.
12. Next we add a border brush, again to a new layer. Not sure who's brush this is either. Again, if it's yours, let me know, you already have credit on the resource page, but I will give you credit right in the tutorial. So we add this brush. I used a dark green right from the image which i picked using the eyedropper tool. The colour was #042D2A. Set the layer to "Burn" and put the opacity all the way down at 14-15%.
13. Next we duplicate our border layer. Set the duplicated layer to "Overlay" with the opacity down around 5-10%, I used 6%.
14. Now we make another new raster layer and we add a second border brush. Again, no idea whose brush this is, so again, if it's yours let me know. I added this brush to the new layer, I used black (#000000) and set the layer to "Multiply" with 55-60% opacity, I chose 56%.
15. Duplicate the new border layer. Set this layer to "Multiply" too, but leave the opacity at 100%.
16. We add yet another border brush (I'm only adding so many because I couldn't find one I really liked for the icon, but if you combine a bunch it makes really nice borders). This brush is from inexorablyhere. We add this in a greyish teal chosen with the eyedropper tool from the image, it's #649898. Set this layer to "Multiply" and 70-75% opacity, mine was 72%.
17. Next we add another new layer. To this layer we apply a texture brush in a light blue, I've used #4B9EB3. This brush was found in this tutorial by unbrokensky, but the brush itself is made by crumblingwalls. Set the layer to "Multiply" and the opacity to 70%.
18. Although the icon still looks a bit odd, we will apply some text now. The text will say "Expecto Patronum" but I want "Patronum" to stand out a bit more, so it will be bigger than "Expecto". So, on the very top of all our layers, we create a new vector layer (not raster this time). And we add the text "Patronus". I've used Georgia, size 5, antialias on, all caps, bold and kerning set to -1 just so it fits in the space where I've chosen to put it.
19. The text looks a bit plain so I'm going to add a drop shadow to it (Effects > 3D Effects > Drop Shadow). Vertical and horizontal offsets are both set to 2, opacity at 100, blur at 3.00 and colour set to black (#000000). Make sure "shadow on new layer" is -checked-. Set the new shadow layer to "Soft Light" opacity, 100%.
20. Now we'll make another new vector layer on top. On this layer we will add "Expecto" in all caps, Georgia, size 3, bold, kerning set to 500. Leave this layer at "Normal" and 100% opacity.
21. Okay, here is where we start fixing the icon since it looks a bit weird. Remember your base image? Duplicate it and move it up to the very top of your image. Or you can just paste it as a new layer on to the very top of all your layers. Set it to "Soft Light" and put the opacity at 52.
22. It still looks a bit odd. So, I made it so just the 4 layers before the first gradient were visible and merged those. Then we copy it (then you have to undo the merging and make all the other layers visible again -- it's a bit of work, but trust me) and paste it as a new layer on the very top. This layer is then set to "Soft Light" and the opacity stays at 100%.
And now you're finished!
This is the final product.
Please, please, please do not follow this tutorial verbatim. It was written for you to learn from, not to copy exactly! So learn from it and enjoy it. If you have any problems let me know. As well, if you use the tutorial I'd love to see what kinds of different icons you came up with :)