Here is the list of what I will and will not write for story commissions. I may update this list with new things, and possibly a separate list for non-sexual commissions.

YES:

Humans
Humanoids
Pregnancy (Both Genders)
Breast Expansion (Both Genders)
Butt Expansion (Both Genders)
Genital Expansion (Male)
Heterosexual Relationships
Romance
Weight Gain (Female)
Nekomimi (Humanoid with furry ears and tail)
Multibreasts (Multiple rows with two breasts per row only)
Udders (Female)
Femboys
Hermaphrodites/ Futanari
Fantasy Setting
Sci-Fi Setting
Modern Setting
College/ High School Setting
Yuri

MAYBE:

Soft Vore
Unbirthing
Stuffing
Immobilization
Air Inflation
Water Inflation
Aliens
Monsters (Non-erotic stories only)
Oviposition

NO:

Yaoi
Facial Hair
Body Hair
Furrys (No furrys in erotic or sexual scenes. Furrys in non-erotic stories are OK.)
Muscle Expansion
Hard Vore
Digestion
Scat
Watersports
Horror Setting
Bursting/ Popping