First i made a Rough copy of my imaginary product on a diffrent page putting objects together cutting them out and pasting them. when i was done that i saved it onto my blog but it didnt look finished so i decided to put it in a background.
1. first i looked up a picture of a guy using a chainsaw (it doesnt have to be this it can be any background)
2. i pasted my imaginary product over top of the chainsaw
3. i used the opacity meter and the eraser to make it look like he is holding it
4. i used the clone stamp to fix any in perfections