Teenager who needs help down their.

I'm 15. When I shave my vagina I find it really hard to get inside my flaps to to get those little pubes that are hiding and I've tried putting a mirror down there so it would be easier but that just makes it harder. 
Is there any advice that could make it a whole of a lot easier to shave down their??
Also do guys actually care if I don't shave because that would be so much easier hahaha am I right!