Marisa Kirisame says "Have a Happy Birthday, ze! I made you a mushroom cake with the FINEST ingredients in Gensokyo!

I know it's impromptu, but I did a quick sketch of Marisa as a birthday present for ya.
In the Touhou lore, Marisa lives in an enchanted forest and constantly forages for mushrooms and other ingredients to make special potions and concoctions, in fact, those explosive vials she has are actually flammable mushrooms.

So the name Alchemic Mushroom really felt like a fit for Marisa to be the subject of the drawing.
I legit just did it today, so sorry for it not being refined, but I hope the sentiment goes.