TWO BIG POSTS TODAY.
This is a class project where the instructor gave us a general concept for a character, and we had every other freedom. The character had to be a 86 years old spaceman/woman who collects relics that helps him/her rejuvenate their age.
Here are my concepts:
So I was thinking he's in space without oxygen, so he has to be wearing a suit all the time.
The back of the suit has a main jet thruster that can angle itself to a degree, and the three tubes hanging down is an adjuster jets. It can do minor adjustments as he fly around, and it's connected to a disc that can spin around to hover. His tool would be like a mop that can self morph into his needs: grabbing things and attacking things.
I used ink and marker with alcochol wash on this one.
It's really hard to control the alcohol in the way you want.