I honestly think in terms of colour and style you've got it down, you clearly know what you're doing when it comes to art work and you know how to capture the fun which keeps your watchers watching, which is what you want. The only thing I can really point out is that I don't reckon Rainbow Dask is blue enough. But apart from that you've done really well, so well that I dont think it's worth knocking off a star for anything as that little thing I pointed out is indeed petty!
I LOVE the take you've done on Jagermeister, it really works and I think that's really really clever. Keep up the good art work, you've earned this fav and this watch from me good Sir! (or Madam)
I think the color scheme is very good. if I had ANY complaint it would be the ears. the are a tad to pointy. But besides that your art is very pretty. I should know, my art is WAY WAY WAY worse than this. I think that it's the the colors that just.......pop! I love all details in it like the background and spike. I like that RD and apple jack are competing (apple jack would win) And I say thank you friend for thinking up this great piece of art and thank you for this being my first critique.
Can't tell which part is funnier, Twilight trying to stop Spike from drinking (why did she even bring him if she was not going to allow him to drink anything?) or Fluttershy and Rarity's reaction to Flutter's gigantic drink