I enjoy when authors of art/sketch blogs write things like these in their posts:
"I can call this my first acrylic on board. Oils can be yummy and vibrant and flexible, but the drying times drive me insane. So I gave a try with a new medium and I'm sure I will keep practicing. It was fun.
In the end, I scanned the whole thing and made some contrast + yellow tinting with PS. Then--- aaarg-I added some highlights. How could I resist? The original piece is mostly grayscale.
If you wonder what is that weird red floating thing, I make myself exactly the same question."