questions about prone masturbation

1. how can i prone hump if my penis is pointed up? my penis when hard is parallel to my stomach and i cant bend it more than 40/50° down. do i have to start soft?

2. how long will it take to see results and how long before having a permanent limp dick

3. will you be able to only cum to prone masturbation after a certain point? as in normal methods of masturbation become useless?

4. how do you not make a mess on your bed or wherever you prone hump? there dosent seem to be a way to aim

thanks in advance ❤️