I have zero experience in bed, how do I get good - 10 points?

Well I'm a girl around your age and personally it wouldn't bother me at all, girls who let this affect your relationship are shallow and not worth your time! If a girl is any way decent she will understand and be patient and help you along by telling you what to do. Just don't stress over it too much because if you over think you might not 'get it up' so just go with the flow! If any girls dump you over this then it's their loss!!