Sherlock fanart: "Red and blue"

I wanted to draw something, so I had a look at the SH kink meme earlier, hoping I would find an inspiring prompt, and I found this:

Sherlock with red lipstick and Mycroft with blue using only their mouths to drive John out of his fucking mind.

As usual, the result is silly rather than kinky.

Preview:


( Poor, embarrassed John... )

The proportions are all wrong, but I didn't want to work on it too much.

Edit: There's now a sequel of sorts here.