Raglan decreases

I am knitting a sweater in Fisherman stitch and would like to know on what stitches to do the decreases so that there is a nice seam. Should I do them 2 or 3 stitches from the edge and stockinette the last edges stitches?
Any advice? Thank you

You can do them that way, or maybe only 1 st in, doesn’t have to be as many as 3.