help! I need some tips!

So i’ve been really wanting to try a fake tan so I ordered the balibody fake tanning mousse and I have so many questions! if you’ve done a fake tan before maybe you could help me?

1. how soon should you shave, shower, and exfoliate BEFORE applying a fake tan?

2. After the tan has set and developed, you shower again right?

when you’re washing off the tan do you use body wash or just water?

3. Can I put on lotion after I’ve washed off my fake tan?

4. If the tan comes out bad, how do I get it off?