Instead of just the image itself I thought I'd show some of the process this time, 'cause maybe you'd be interested in that?
First and foremost, I start sketching
From that rough sketch, I shift it to another color, reduce its opacity, and try to make a clean sketch.
I then hide the rough sketch, and then use that clean sketch to create my blacklines/ink.
Then I hide the clean sketch, duplicate the layer (to make it more solid), and I have my final lines.
Normally after this point, I'd color it in and add shading and such, but since this is supposed to be a quick doodle, I wanted to spend less than a half hour on it. So that'll be the post for today. I hope you find this interesting!