Serenity, I've definitely gotten better at painting my nails (and not snacking!) though I'm still not perfect at either!!!
I think the best advice is to experiment with different brands to see which kind of brush works best for you, don't wipe off too much of the paint off of the brush before you paint the nail (it's goes on easier that way!), and make sure your nails are clean, filed, in good condition, etc, before you paint.
Much like losing weight, painting one's own nails requires great patiences, HAHA!

