I felt the same way when I first started quilting. I really could not visualize how fabrics would 'play together' in a quilt. So at first, I found quilt patterns I liked and looked at lots of pictures of finished quilts in that pattern, picked the one I liked best and found the closest fabrics to that and made it that way. After a few "copies", I got more comfortable picking some different fabrics than the ones I saw in the picture. Some I ended up liking, others I didnt, but I learned something from each one along the way. You don't have to create an "original" at first!