I went to my local salon with a question and im not so sure if I agree with the answer I received.... I have an exhisting set of short acrylic nails. I asked if I wanted to add length what would they do. I thought they would say apply forms and sculpt a longer tip. Their answer was to file the acrylic down and create a smile line all the way down to my natural nail and then glue on new tips and cover with acrylic. Is this safe? thanks!:lick: