Well, I attach my system from the back going forward, once im done with the base, the front hair part is locked in to where it is going to be etc. so I just draw in the hair line with a make up pencil or another method etc. flip it up put glue, than flip it down carefully onto the glue. I find that , if possible, combing the front hairs back ahead of time helps line up the lace and keeps the glue from sticking to the hair. U could also lightly oil the hair near the base, but don't get any on the base or it wont stick to the glue.. after ur done glueing the front, u can take a q tip and tab it in got2b glued freeze hair spray and blot the perimeter of the hairline, this will dry non sticky. So it helps not to attract dust or hair into the hairline. hope that helps a little