Another cool drawing

And here was another cool drawing, I like the lines and how it goes from a to b and has a sense of smoothness and while this could use some color the black and white drawing here is just really nice to see very good visual here and cant wait to see something in color from this.

~~THINGS TO IMPROVE ON~~
Some color would be nice but the black and white is amazing.

~X~

I've forgotten how you make these. What's the white medium?