Jetpack Girl lines

I was browsing my art stash for ideas and stumbled onto sketch by Toshinho. It was fun character concept of girl with jetpack... but when I looked it second time I noticed it wasn't jetpack, it was huge hammer. It didn't ruin picture for me in anyway. It was still fun concept, but I wanted to try how she would look with that jetpack. But after drawing jetpack I didn't stop there and started ink rest of picture, made more changes and added background... and used my weekly "homework" drawing time to make this collaboration work without Toshinho's permission

Original sketch by
Changes and ruined lineart: me