Falling under the category of Baron's Art Tips. When inspiration strikes but you don't have the time, or energy, to take that inspiration to a finished end do some quick notes or sketches of it. Often you can return to them at a later date and pick them up from there.

These are some images of Fluttershy that have popped up in my anthro MLP dreamscape while I was sick recently. I wanted to get them down on paper before I forgot some detail. Whether I'll do them all as finished pieces is unknown, but I can now revisit them in the future.