It takes a certain amount of bravery to write about body image. Kudos to you.
Sounds like your process of mixing non-fiction and fiction is a good and safe way forward in your healing.
I too have fair skin and burn easily. My body image dysphoria arises from having been sexually abused by many of my relatives which was uncovered when I finally felt safe in my late 30s via many flashbacks.
A spiritual practice, therapy and helping others to heal has helped me to begin to accept my body.
I hope your healing goes well.
Thanks for sharing. My heart goes out to you.