How thick are the lashes your picking up? I started with thick lashes to begin with to get used to placing them on whilst having to separate, are your tweezers nice and straight? Sometimes they bend at tips which makes it a lot harder to pick up as they seem to slide away! I was in the same position as you in fact I still am
I have now done 19 sets and that is me just starting to do sets in 2 hours although if the client has more lashes than average I am still taking a little longer! If your having a moment while doing them where you feel frustrated go and get a drink take a minutes breather and go back to it that seems to help me too
you will find once you go on to a faster drying glue this helps a lot more too with your time! Hope this helps
xx