How to shave down there?

Hey so I recently just tried shaving down there (usually trim).  I found it was hard to shave the outer lips as the skin is so soft, and I couldn't do so without cutting myself! I read somewhere that I should hold the skin tight, but it's hard to do in that area (especially when I'm wet and trying to shave around my fingers).  I also can't get the hair that is more on the inside of the outer lips! I wondering if I should go back to trimming.  Is there any way to successfully shave down there???