quilters Question

To all my fellow quilters out there I send you a question. How do you pick what design for your quilt or do you pick a design first and then choose the colors. For the last 3 quilts I have bought a pattern or like for my first I joined a quilt along so it was pretty easy. I just had to get the fabric. Now I have some fabric but am unsure of the design I want to do. I was thinking of doing a coin quilt with these fabrics what do you think? or could anybody suggest a better pattern? some of the fabric I have only a 1/4 yard cut of.do they all go together good enough?

I want this to be a lap size quilt. any help or suggestions would be much appreciated thanks!!!!