As before "I'm no expert", but 2 things when it comes to masking.
Mask in such a way that the paint (clear, whatever) doesn't build up too much. Then when it comes to removing the tape it comes away clean and doesn't "break" the finish.
If you're gonna wet sand, the wood could use a little paint/clear to seal it up so it doesn't absorb any water and expand and crack the finish.
Don't ask how I know these tips...:-(
stew