Orange and Rust BSJ

I made my first BSJ in 2 colors of Cascade Superwash (on sale at the yarn store) on size 6 needles. I finished in no time at all! What a neat pattern. The buttons are from my button collection--you can't see them in the picture too well, but they are red with swirls on them. This is for my dentist's new baby (not born yet though). I finished the seams on the top and neck with single crochet and the edging on the front and bottom is icord. I want to make more but I will need to find a better way to finish it. Any ideas? I hope I put the buttons on the correct side--it's for a boy.