menstrual cup question(s)

Ta

I recently bought a menstrual cup and this is my first period where I've got to use it. I have no idea if I'm doing something wrong or if it my cup, but it's leaking. I mean it's still doing its job, i.e. there is more blood in the cup than what is leaking out, but I'm pretty sure it's not supposed to leak at ALL. I'm really positive that I am putting it in right. Folding it, insert, pinch bottom, and twist to seal. Yet it is still leaking. Did anyone else have this problem when they first started using theirs? Will it stop leaking as I get used to using it? Do you think I'm doing something wrong? I am all for answering any questions you might have to help me figure out what I'm doing wrong/is going wrong