It's a difficult task as you first must convince the kitten that you are, in fact, no threat. You then have to make him curious about the idea of the kind of cuddling the check-up requires. Once you've managed these two things though you'll eventually end up at the internal check-up (depicted). In this phase you have to handle it with care, be firm but gentle, kittens are fragile. When you have inserted your tool as far as the kitten can handle you just move it in and out slowly until the receptor has adjusted to the size.
After some time into the session the kitten might start to feel a bit emotional, so feel free to turn it around so you can hug each other. It's also important to refill the kitten with lubricants (see pic 2), kittens use lots of it so don't be afraid to repeat this procedure several times over the span of the day.
Once you've completed your task stay with the kitty and cuddle, bonding is important.
Happy Birthday Xelmy <3
Xelm © @Xelm
Link and art © \r\n\t\t\t\t\t
| \r\n\t\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t \r\n\t\t\t\t\t\t\t\t | \r\n\t\t\t\t\t\t\t\r\n\t\t\t\t\t\t\t\tLink\r\n\t\t\t\t\t\t\t | \r\n\t\t\t\t\t\t
(Feel free to suggest keywords if you feel I forgot any)