I do not do a cutting chart. As a general rule, I cut largest pieces first and then work my way down to the smallest pieces. I'm not sure how accurate you can really be with yardage for paper piecing though as there is always waste. I do always buy extra yardage than what a pattern calls for. I don't maintain a stash so I just buy for projects. The only 'stash' I have is any fabric that may be left over from those projects purchases. Amount of extra that I buy varies greatly. If it's the focal fabric for any given quilt and depending on how large the quilt is, I might buy up to a yard extra of that. Other lesser needed fabrics I'll buy anywhere from 1/4 to 1/2 yard extra.