This is something I did a few weeks ago. Its not exactly how I wanted it to turn out (I wanted to change every clover to a "Bob" head but as soon as I got to a certain point it felt like I had over saturated it). I used photoshop to make this.
And for any one who can't figure out who it is that I used for all of the heads: It's J.R. "Bob" Dobbs from The Church of the Subgenius.
I know , I know... Photoshop= a no no for art... But I like it any way, and I will be submitting some more "Original art" in the future. And not using photoshop.