Two 60 Year Old characters working together on creating a big mechanism made of iron and electronic circuits. The first character is a welder, dressed in a welding suit and mask. The second character is a fitter, wearing a shirt with sleeves rolled up to the forearms and a tool belt. No hat. The mechanism they are working on should be in the center of the drawing, should look like a heart and to be 1\5 of the whole immage. Characters positioned on either side of the mechanism. The sketch should convey a sense of teamwork and craftsmanship tattoo idea