Altering overalls to have snaps
Hi, I know this is weird but bare with me on this. I have some store bought overalls that I wish to alter to have snaps in the crotch and down the inner leg seams, much like one would put on children's clothing. I have done this once, but found that the snaps popped at the top when one set down. I assume because the original pattern didn't leave extra room for this feature... Is there a way to alter existing pants in this way or do you have to do them from scratch?? Any suggestions would be swell.