Here is an example of something I did while experimenting, by accident(plain luck) I found out something rather cool using Photoshop.
See what I mean, with only some lines using the lasso tool I ended up with a silhouet of a face of a woman.. Awesome isn´t it. And it only took me some time to play around with the filters and hoping something nice would turn out.
This is a great way to create brushes for example.. hope it can be useful.