Top of Arm Quite Difficult

[Cybernetic]

I did a tattoo on my brother inlaw last night, and found it quite difficult to outline. It was at the top/outside of arm on the muscle bit. I think its the tricep, but could be wrong.
I found it quite difficult to do, because of the positioning of the machine, and obviously a different grip, than when holding flat. It was just a load of flames round an existing black panther. Will get a pic when i next see him.

 

[Reaper G]

I found it difficult the needle was wondering off course on the fleshier part of his arm it does alter your grip a bit practice I guess