Design for tee shirt I have but want help to make it work.

This is what a business in New Zealand was looking for in their graphic design

Tee Shirt Designs 1 colour to go on dark grey tee shirts. I want something like i have attached but way better. like make it stand out more and like another hand the same as holding the rod holding a can of beer etc,
want large on back and like 10cm x 10 xm on front so maybe just good shot on front without the rest. Read more