I had this same issue and still do but here's what I do to resolve it.
Here is how I do it during regroom:
View attachment 173094
1) When installing, tape the front leaving around 1cm or as the other guy said glue leaving around 1cm.
2) Once you've marked out the limits of the lace with a comb (crucial this is done accurately), wet the hair, comb it back, and use three bulldog hair clips to clip it back. Centre, left and right. Apply the glue.
3) To place the front down make release the front clip only and keep tension on the front part by pulling what I have marked 1 and 2 down and out. Points one and two should be stuck down and then with one hand hold all the hair back and with the other hand gently press down the points in between with a comb. Just focus on the VERY front of the lace with the comb. Done correctly, should be no creases and no hairs stuck. The glue normally seeps when you press too hard or use too much or use too much poisoning spray on glue.
4) Now release one of the other clips and pull either point 3 or 4 outwards to keep tension and get that down and repeat the same, hold all the hair back with one hand and use a comb to press down the front edge of the lace to the glue.
5) Do it for the last part.
6) Lastly I use a paddle bush to pat down the area just behind the hairline to the glue.
Hairs sticking the following day:
So this is a tricky one and I haven't found a proper solution to it as there will always be a little overlap between the glue and lace. But what I do is take a cotton bud and dip it in alcohol and rub it on the hairs that are stuck and pull them free every morning. It only takes a few mins as they only really get stuck overnight. If you are finding this happens during the day then you are prob using too much glue that is seeping through the lace or the glue is too far down. If too far down then just wipe with a wet wipe dipped in some alcohol and if too much glue then can fix that next time but can try styling your hair in a way to minimise contact with this portion of the hairline if possible. Or on the other hand style it to cover up problem areas so it's not noticeable. If the lace is flush to your skin then the hair can't get under it which I found was an issue initially.
Hope some of that helps and it only gets easier with time!