Now, I've cropped a piece out.
Then after manipulating it in Photoshop this is what it looks like. Now granted this isn't the best abstract painting I've ever done, but it gives me something to work with. I could use this painting and build an entire series from it, doing several paintings as an homage, if you will, to Rembrandt. Try this for yourself and see. Pick any artist you admire and crop small pieces out of their painting. Then manipulate it and work on it to make your own vision from it. This is an old and honored tradition among artists, re-interpreting their ancestors.
Take the work below by Picasso "Portrait of a Young Girl" Now look at the inspiration for this piece by Cranach the Younger. The possibilities are really unlimited. Find your inspiriation wherever you need to!