Everyone has their own way that works for them. For me personally though. I would not use that kind of tape first, than draw my balding outline. It might be a little difficult to see your hair through all of that kind of tape. and I usually make my system a little.. (fraction) smaller than the balding area, that way you can stretch the lace for a tight fit and dont have to worry about too much overlap.

I suggest drawing the outline you need while the seran is on your head to see your outline a lot easier, then use clear tapes.