slice up the line is good, but don't try to paint the lines. give yourself some space between your target and the line.
the inside out forehand leaves your opponent's forehand side of the court open. you have more margin for error than usual and your opponent has longer distance to cover.
Disclaimer: I'm NOT a coach...
Real tennis: https://www.youtube.com/watch?v=yDqnkLJ9BtM