Though I've never been a fan of Die Antwoord (never really saw what the big deal was with them, then again, I am not into Rap / Hip-Hop music at all), I DO think that if you make it to their next gig that is closest to Montreal (at "The Danforth Music Hall Theatre", Toronto, Ontario on Wednesday, June 4th, 2014 at 8PM) and are willing to put in a 5 to 5 1/2 drive from wherever you live in Montreal, I DO think that you should print this image out on high grade paper and pass it along to the lead vocalist, Watkin Jones (a.k.a. "Ninja).
I think that he'd get a big kick out of it. Seriously.
Also, I think that you should render the same style for the female vocalist, "Yolandi Visser".
Your friend, Darren Bartley, did a good job on his particular interpretation of the cybernetic version of Yolandi, but I think that you should do one in the same style that you did of Ninja above.
Here's a link / image suggestion in the same vein as the original image that you did of Ninja (but for Yolandi):
Again, give it a shot and maybe catch them when they play in Toronto. I think that if you're able to, you might be able to give them copies of your artwork. I think that they'd be VERY impressed with what you've come up (or would come up) with.