Recently I found myself asked about how to approach anal sex, from the perspective of a female planning to peg a male. First, I would suggest hygiene. Some people go as far as have their submissive do an enema beforehand, which is helpful but not required. However, a shower is definitely called for beforehand, and it doesn’t hurt to shave or trim hair in the pubic area as well.
It is also a good idea to suggest that your submissive use a butt plug for several weeks prior to actually trying to peg them, because they need to get used to the sensation. That’s because being relaxed is really important, and new sensations can be scary and cause people to tense up.
Remember to take it slowly, and use lube on both the dildo and your submissive as well. Don’t rush, because tearing is painful and can cause infection. As long as you both remember to stay relaxed, you should have lots of fun!