If you composition doesn't work, do it over.

If you composition doesn't work, do it over. Yep, that's the only solution. That's why we, artists, do a lot of thumbnails (or nowadays could be speedpainting test) to work out the composition and lighting before we actually go in and do the real painting and refinement of whether digital or traditional. It will safe us a lot of time and effort and the illustration or painting will turn out