cute fabrics! If you have a bit of warm colors yellow/orange/red to pull from the dinosaurs, that would be fantastic! I happen to like contrast, but not everyone does. If you aren't sure about fabrics during the design phase, take your main print or potential block fabrics and place them together on your washer. Every time you go in to wash, take a peek, rearrange as needed and edit when you're ready. It's amazing what a little distraction and time does for the creative process. Your little one is going to love your project!!