Thats a lovely picture, and I can see that you really worked hard on it. Considering that we hardly ever see any art from you, this is quite exceptional compared to what sad attempts I could ever make drawing from scratch.
Thank you. I'm very glad you like the card.

And thank you to everyone else who complimented me on the artwork.

Naww great... Siak can't see anything again. 
Siak is amusing, as I can see the place where the hat is drawn alludes to her introduction (in which she has seaweed covering her face). Fortunately, this pose also means you can avoid drawing her eyes which from what you have said are difficult to get right.
Yay, you both caught the reference!

Yeah, I liked the mental image of Siak with something covering her eyes, and thought it would be hilarious with a party hat.

And you're precisely correct about the bonus that it means I don't have to draw those pesky eyes.

They all look great, especially Ruby. 
Ruby is very well drawn, and looks similar to how I might expect her to look in the series!
Thank you both immensely.

Yes, I'm very pleased with how Ruby turned out.

Glide looks almost like you would expect him to look, if a little bit meaner then usual. I had hoped to characterize him as stern and serious as opposed to angry, but apparently the image of the villian is one that is still sticking in people's minds. Perhaps I have been too conservative in my portrayal.
Actually, Glide’s expression is meant to express his irritation at being made to wear a party hat.

He’s probably thinking something like, “As soon as this party’s over, I’m throwing this thing into a smoking mountain.”
By the way, the idea of having the characters wear hats was at least partially inspired by one of Ptyra's art pieces; specifically, the last one in
this post.)
Also, Glide's nose looks a little bit too pointed to the point where he looks a bit like an ape
. Nonetheless, he's still pretty cute and contributes a bit of a 'whats all the fuss about' emotion to the whole picture.
Yeah, Glide’s beak and mouth were the main things I wasn’t entirely happy with (I think his mouth slants upwards too much). And I probably should have moved his pupil all the way up to the corner of his eye, to make it clearer that he’s looking at the hat on his head. I’m pretty happy with the rest of him, though.
I hope you don’t mind that I used your wingtail characters in the image, Sky (and I hope they at least look okay).
No, of course not. I feel actually honored. :^.^:
Wow, really?!

Well, then, you're welcome!

Or…thank you! Or both (I'm not sure which one.

:).