Since he asked for the quilt a year ago, I would check back with him, before changing anything. His tastes may have changed and he may now prefer something different. I would never, ever impose my own taste upon someone else, if asked to make a specific type of quilt. That's pretty much telling the person his/her opinion doesn't matter.
To another poster -
Regarding the baby quilt, your SIL probably didn't want to hurt your feelings, by saying she didn't care for your idea. She sacrificed her own feelings, to avoid hurting yours. You should feel honored, not insulted, that she values your friendship enough, to hang it by the bed.