I also like the narrow border and then the floral. Also, since the floral is a strong repeating pattern, it might be fun to work with that design.
Since it's for a baby, what would a baby like? As baby's develope, the first thing they can see is contrast in value and bright colors. They also look to "eyes". I think the way the floral is in the picture suggests eyes. I think the baby would be looking at the border. Then as baby developes, there's other things to see.