Draw me a dragon silouette

I need a black silouette of a snake-like dragon graphically drawn on top of file. it should curl around the windows (that are cut out) it should be black and clearly visible. it should take up most of the space. it should obviously a dragon / dragon-like snake on the outside of a wall. Not subtle. Solid black with no shading (i have only 3 colours for the screen printing)

Look at my (bad) pencil drawing for examples of what I am looking for

Take the attached AI file and add the dragon as a layer.

I need it by end of day today