I too use the All Stohlman method however as opposed to some when I make a lined holster I make the lining as the holster and cover it as opposed to making a holster then lining it this also avoids wrinkles it is basically making a roughout holster then covering it with another piece
this makes sure the boot of the holster is not going to be too small as well, when lined and complete, I leave extra material on both then I sew it up then trim it out.