If you're wanting to play the emperor, go for it, it's not as difficult as it seems, I have performed it multiple times and it's a fun one. It was the first Beethoven I ever learned, and the second concerto I learned (Gershwin F minor was the first). Good luck
FUN??? First beethoven concert??? does your teacher allow you such stuff?
happens that i've recently heard 5th played by a too young kid (around 20 i think) - and it struck me that he didn't even got to discover all the traps this concert hides, he fell in the first and the most obvious one: there are so many notes, and so many passages where the piano accopanies the orchestra, that you could easily get to just play the notes and the indications written. and then i realized i've hardly ever heard this concert really played (live, i mean, recordings by great pianists excluded).
my point is, maybe you played it well - maybe you even played it incredibly good. in this case, you're the exception to the rule. as a rule, i wouldn't let anybody play with this concert before 30 or before having played at least one of the first 3 concerts and half of the sonatas he wrote (also at least one of 101, 106, 109, 110, 111, and as many as possible earlier)