If I can, I PP anything with points or is fussy. The way I do it so as to not waste lots of fabric, is make a template. If the pattern is not from Electric Quilt but a purchased pattern I take a copy of the pattern then cut out the individual pieces. From here, I can copy the piece on a fresh piece of paper then with a ruler add 3/8" or 1/2" all around. I have found that this usually gives me more than enough wiggle room. If the piece is square or rectangular I tend to go to the smaller number. The only thing you need to consider (and this goes for all paper piecing) is which side of the template is the right side as some triangles are not "reversible"