Development - Skateboard

I have been doing a lot of doodling and sketches of designs. That includes graphic designs inspired by tattoos and a few garments inspired by the shape of spirits and smoke (smoke is what I think best describe the visual image of a spirit). In my free time, I did a skateboard design and I really liked it. It was a pope with a bird skull as his head and in the background it was a diagram. It links with my project really well and I think I am going to incorporate my drawings into my designs. This drawing took me around 4 hours using only marker pens with lines and dots technique.