Instead of using buttons I crochet little circles and sewed them on. The only other thing I did differently was add a couple of rows to the beanie to make it longer. I looked up the measurments for a 3-6 month hat and it should have been 6 in long from the crown. Mine was a little short at about 5.5 in. All I did was add a row of crochet in the black color, I kept the pink at 5 rows because it looked off when I tried to add an extra row of pink. The same thing with the mickey hat for 6-9 mons, I added I think 2/3 rows of the black to make it longer. I also doubled up the ears, to get them to stand up.