Hi there, i'm new here.Today was another attempt at pulling my foreskin back, i wasnt too sure weither to do it or not until I came here and saw the images etc. I finally got it pulled back and it was great. When It was back though I noticed some white marks on the head, which could be easily removed, just wondering if this is something wrong? or if its just because it was my first time pulling it back.I'm 16 and want to know if thats a normal age to be able to do this? Am I too early/late?Thanks.