The original was colored live on Twitch.tv/HR_Johnson for the Pinuptober 2025 challenge prompt - Mechanic. Because this is the internet, yes I know wearing necklaces like that is not a good idea while working on machinery. Sometimes we artists just draw stuff because it looks cool, even if it's not practical. (;
 
The original piece is 2"x7" alcohol and India ink markers with a touch of gel pen on 65lb cardstock. You can see the marker bleed through the back side. 
 
Print reproductions are 2"x7" on 120lb cardstock.