Not much there.
Your background were extremely low-effort; only the flag one was really interesting. Couldn't you find a picture the Reichstag or a Nazi rally or a Miley Cyrus concert to put in there? Why didn't the music loop? It just ended while I was still messing around.
The clothes were okay, but why'd you draw only the half-pants for the uniform? You can only use them with the uniform coat, otherwise they're like leggings or something. Also, Hitler's Nazi uniform was khaki. And where were the lederhosen?
Put some creativity in there. While Hitler is one of the pillars of comedy, by himself he just isn't funny or interesting enough to carry this.