trouble with insertion

Hi there, I just received my first menstrual cup (Mooncup UK, size A), and I want to make sure that I can actually insert and remove it before I actually get my period. I've been trying for two days to insert it with no success. I'm in my 30's, a virgin, and I've been using tampons since I was 16. I knew there would be a learning curve, but I had no idea I would have such trouble with this! I've gotten the cup partially inserted using the triangle fold or the punchdown fold. I seem to run into problems when the hand that I'm using to insert gets so close to my body that I can no longer hold the fold. The cup either snaps open and pops out, or just sits there. I've tried pushing it in, but rather than pushing it further into my body, I just seem to be kind of pushing or folding the bottom of the cup into itself, if that makes sense. Any suggestions?