I draw sigils and other empowered symbols onto myself all the time!
As a matter of fact, last year, I consulted Justin (a scholar of the Icelandic magical symbols known as galdtastafir) on what would be the best one to modify for anti transphobia. He was not only helpful, but felt honored that a marginalized person would draw on his expertise in a social justice working.
If you want to learn more about that magical system, his website is the single most accurate resource.
Disability Awesome: Autism Is Not A Disability: It's The Most Powerful Ability
Overcome Autism and any Disability. Watch this real life success story showcasing how the disability of a person can be turned into an overpowering ability. How simple decisions can change lives. How a disabled child turned into a World Champion.