R2D2 Hat

My Star Wars R2D2 hat.  I made it for my nephew before he was born and I think the front turned out great.  The back, where the seam is was terrible.  I didn't know how to join my rounds at the right spot.  I even had an offer to buy it from me and I would have sold it, but it was a pain to attach all the little pieces on the front, and I didn't wand to do that again.