Finally, this is less of a critique and more advice, but I notice the ground looks just a bit, off, as if it the leafeon was floating in some kind of empty void and the grass was just a flat wall behind the leafeon. You can add some space or dimension to the drawing by drawing some grass in front of the leafeon's feet and basket.

Second, if you look at the left eye, you can see that the white is very prominent, I would personally scale it down or use a small brush to trim it however you are not me and so I will leave it up to you and your imagination.

If you look at various parts of the body, but mainly the ears, you can see the green lines used to make the green gradient in the leafeon's ears, simple fix would be to get a small size brush (1 or 2 pix) and just fill those in with brown or whatever that specific part of the body is meant to be colored.

I have returned to criticize once more.
A lot less for me to work with here since this is by all means a pretty good drawing but I will do my best.

Yis

Chocolate

“I’m aware, but this is also my auction, and as such my responsibility to overemphasize every purchase within the area.”

‘Wow this is incredibly easy!’

“And sold to the random blank faced goober for 1 trillion dollars!”

‘Wow what an easy scam’

“And sold to the 11 foot tall Walmart ender dragon!”

E

I leave it up to you to guess which scene this is.

No… It’s not possible… NOOOOOOOOOOOOOOOOOOOOOO!

Who is Joe?

Can we talk about how smooth that tail animation is.

I can now see’nt

Aight get in the book, I gotta get my sharpness 4 sword and I need 3 lapis to do it.

Apologies for summoning the wall of text, However I do hope some of my criticism can help.

Aside from that I say you did a good job in choosing to do a frame by frame instead of just copying a frame and editing it, I also think you did a good job with calculating how the run effects the body neck and head of the dog as shown with the dogs head bobbing

Finally, I suggest you pay attention to issues with the fill tool, if you look closely at the animation now you can see white spots that the fill tool missed, remember that fill tool isn’t perfect and sometimes you gotta manually fix a few spots.

Second, if you look at Dog or other quadruped animal run cycles you can see that their legs extend much further than shown in this animation, my advice for this would to be searching a reference on google, type in something like “Dog run cycle” and then go to images or video’s. Having a reference helps a TON, trust me.