How do you paint your nails with the opposite hand?

flattern out your left hand on a table or flat surface of some sort and when you are applying your varnish, rest your wrist on the surface so that you have moe control. it does take practise but you will get used to it eventually. always apply a base coat so that if you have trouble and need to start again, its much easier to remove the polish and it prevents harm being done by using acetone alot.