When I cut mine (for sale) I do not use a pinked edge, do not include selvage and if they are even 1/8" off I put them aside to cut the next smaller size out of them. Plus I always add a few extra just in case there is one in the bundle that the buyer has a problem with.
DH usually does most of the fabric cutting but I do NOT let him cut charm squares because he is not as precise as I am.