Designing a Header

Okay so I wanted to draw a cool picture to put on the header of this blog... but I wasn't sure of what I wanted to draw, and so I was looking through some pictures I have and I saw a picture of an assassin jumping at his target, then it hit me... I could replace his knife with a pencil and replace his target with an easel... and so that is what I decided to do.
And now after around 6 hrs I've finished the outline.
It should be finished soon... but till then here's a preview.