Well with a drawing I think it could help with shame. In a similar vein I have major hang up about my belly due to.my mom's abuse related to my body. Earlier this spring my T was doing energy work on me on the floor and I twisted around and my shirt came untucked and ended up just under my chest exposing my whole belly. She had probably the best possible reaction which was "this is too good a tickling opportunity to pass up" . she tickled me for about a minute then told me the universe was probably telling me it was time to.let my belly out to see the world....
That kind of reaction to my body from a quasi mother figure was so profoundly healing in so many ways I'm not even able to appreciate them all yet. It healed me a way no amount of praise or approval from romantic partners ever has.
So I could imagine a similar effect if you have shame about particular body parts.
If its healing for you and your T approves then it seems totally OK to.me