If you have white glue (like Elmer's glue) and a paintbrush around, you can paint the skin around your nails with glue. make sure to wipe it off your actual nails, then let it dry on your skin. Then, paint your nails with nail polish. Once the polish is dry, you should be able to peel the glue off of your fingers, and this will take with it any polish that got on to the skin around your nails - an annoying problem for everyone!

General polish tips: always do two coats, and let the first coat dry for at least a few minutes before you put on the second coat. Single coats are almost always patchy and see through in spots. Also, shake your polish bottle gently before applying. If you shake it vigorously, you might get air bubble in your polish.

I hope that helps!

How much usable vision do you have? If you have some useful vision, a CCTV is really helpful. Also using strongly contrasting nail polish.

There are two other techniques. One is putting the nail polish in the refrigerator. That way, when applying it, you can feel where it is going from the colder temperature.

Another technique to help keep it a bit cleaner is getting some Vaseline and putting in on the skin around the nail (but not on the nail itself). That way, any nail polish that would get onto your skin gets onto the Vaseline, and you can wipe it off afterwards. In practice, the edges aren't quite as clean with that one, though.

Make a stencil that goes around you nails. I have a bunch of stencils to do my makeup eyebrows etc. I'm a drag queen. I'm doing it a lot.

My sisters paint my nails since I can't see. They put a paper under my hand so if they miss or I miss it goes on the paper. Or they hold the paper against the edge of my nail so I can use it like a guide for where to end of my nail is. Try multiple ways and see what works best for you.