I especially love number 2 and 3, the colors are so vibrant and they look really juicy?! I have a big attraction towards symmetry because it so satisfying to the eye but someone once told me to do symmetry with a little twist, so one aspect is not symmetrical and it would be more interesting and I think it was good advice! Do you have photoshop? if not I would suggest maybe gimp as next best, you can use layering or liquify to distort them a little and see how you feel about it.