How can you leave a handprint on the butt cheek?

So I get to make a wish and my wish is to have my Doms handprint on my cheek but I imagine that that’s a bit harder to do than just dish out a normal spanking.

Luckily I have a high pain tolerance but are there any tips and tricks I can use to prep my butt beforehand or anything he can do to make it easier for the print to stick?

Trying it out later tonight :)

Thank you in advance 🫶🏼