it really bugs me when an artists uses a cut-out image and neglects to cut close enough to the image so that the white shows. also, it is not a matter of cutting close enough- white edges just SHOW. it's unsightly!!
how 'bout doing something with that edge?! use a marker on the edges of image that either matches (or not) the color image or the background. that way, the image looks incorporated into the overall piece.
8 hours ago