nail lifting

Hi there, I'm currently using The Edge acrylic system but as I'm a beginner I've only being practicing on friends and family who are mostly all saying that after a few days after application there is lifting on 1or 2 nails. I have tried being more thorough and taking more time on my prep to...

Wondering if anyone can help.. I have two clients which I have been doing for a number of years two of them have developed nail sepration nails looked dry underneath both referred to docs with nail clippings NOT fungal also bloody tests were taken with one client due to feeling run down again...