CMC are still desperate to get their cutie marks. Any help fits, including alchemy. Somepony's lack of attention towards details leads to a mistake, which could become drastic, but turned out fantastic. Not in cutie mark revealing way though.
Enjoy!

The story is written by request and basing on the initial idea of Superfun

Be aware of light BDSM, foot fetish an F+F scenes galore in different combinations.; not foalcon, as CMC are almost legal here.

Previous version of the cover: HERE