There are a few details you missed, if you are trying to really nail the style of the cartoon. Easy to miss if you're not looking for it, but just as a pointer to sharpen your sense of parody.
eg: when the black line goes over the black shirt it reverses to white. (a little tough to see this small). Also the line weight is a little sharper going from thick to thin -- it's a faster line, or using Artrage, you can adjust the setting to clean simplify the arcs as you go and it gives the impression of a master calligrapher or seasoned comic book inker doing the line.
And in 2D Animation, basic stylistic shapes are a little more simplified and exaggerated geometrically as seen in the source cartoon. Drawing at this level is designed for speed -- to whip hundreds of thousands of them out for TV where the lines progress without wobbling during the animation playback, so they tend to be really sharp. It's super direct and the lines are not thoughtful as one can get with a single, stand-alone painting or drawing. The nature of the business creates a specific look. And if one is aware of that quality, it's easier to copy the essence.
All that said, it's really pretty good and amusing. I looked up Viktor Lindberg on Google (USA version) with not much success, and for YouTube and got a Swedish volleyball team (who look really good by the way). So I'm missing the reference to a particular person. But it's a pretty cool caricature that I assume has a lot to do with the person who is the subject of your tribute.
I don't think anyone would ever fault your caricature. I am just pointing these things out for you as you develop your eye and concept how to do parody. It's a really nice caricature. Keep up the great work. The only reason I go into this level of critique with you is because I think you could get to be world class. You're well on your way.