I am trying to do buttonholes. It is over 2 rows. Bind off 3 on one row and then cast on 3 on the next. I have done it but it looks pretty bad. So can someone help me to make it look more professional
What kind of stitch pattern are you working the buttonholes into? If ribbing, sometimes shifting over one st can help (if you're working them over K-P-K they look better worked over P-K-P as they'll sit down in the valley of the Ps).
Best to practice on a swatch on NOT on the actual sweater til you get a feel for the look you like.