So this was the perfect stamp to use - Crown Green Bowler. I've coloured him with Promarkers and I've cut out the large 70 myself and also coloured it with Promarkers to look like grass before backing it onto black card.
The sentiment has been cut with a Sizzix alphabet die - Girls are Weird and I added the image with foam pads so it stands proud a little.
Good luck with the challenge! I'd like to enter the following:
Crafts 4 Eternity: For The Boys
Crafters Cafe: Masculine
Fab n Funky: Fathers Day / Special Male