Fluttershy Showing her plot, NSFW version.
The art based on MLP season 4 episode 14 - Filli Vanilli time 04.45 
Free commissions are not available at the moment, but. I'm just opened up a subscribestar, and the first supporter in just a 1$ or more, will gets a free 18+ NSFW MLP art commission like this. Normally, that kind of commission would've cost $25. Hurry up before anyone takes it! 
You can find out more about it on my Commission page.