I’ve been sick since last week, so last Saturday’s episode was kind of fitting. Princess Cadance is rather difficult to draw, primarily because her legs are quite different from most other ponies. For her face, I tried to adapt Ashley‘s expression in panel 3 of this EGS comic.
As for the story of this episode (this paragraph contains spoilers, duh), I have to agree with Rarity: In the end, Discord got what he deserved. He obviously has a lot to learn about friendship. “Testing” friends like he did is completely inappropriate, and he should have written first rather than complaining about not getting any letters. Hm, maybe Princess Twilight should send him to some little town to go and make some friends?