No matter if it's got a humor content. It's clever and that's enough for many contexts.
As to use, sometimes people like to put their caricatured portraits at the beginning of their column for a newspaper or magazine -- more of a clever portrait that sort of gives the essence of what the writer's journalistic style is = someone entertaining but accurate and can couch things in a way that is a distillation with a hooky essence that speaks of something larger or even a metaphor.
Anyway, this is a really good head. I don't know the guy and while I don't know whether he looks exactly like this or not, he's credible and might well look like this. And the fuzzy crayon type of technique might give printers trouble (or not), it's great on the screen and looks uniquely your own. So you're gaining something of a signature look, Mr O'Mighty1+.
"Not a bit is wasted and the best is yet to come. . ." -- remembered from a dream