For the fireflies issue you’re having, I found this article really helpful (and making the light-source bigger has worked a lot of the time for me): http://www.blenderguru.com/articles/7-ways-get-rid-fireflies/
Wow, thank you, nice overview.
Closeup
Wow the last one looks great!
Thank you 
That’s for my avatara here:
It’s just impossible to stop playing with the rigged model. Probably, I need to rig something other.
Ducky
Had a new idea. And wanted to model a fishtank.
The fur is amazing, good job the bear is now very cute 
I like the idea of your last duck in fishtank, you could really end up with something cool with a background.
How did you manage to get the reflections distorted like that on the fishtank? Is it a normal map? Looks great.
The glossy parts though seem too strong and bright I think.
That first bear would make me run, or perhaps tie somebody else’s shoes together and then run. (So I’d have a chance.)
Later attempts on the bear are cuter though. Interesting sketchbook development.
On this very image, the deistortions came after over-subdivision. But before I’ve always added some musgrave texture to glass, just because real glass is always a bit distorted.
First animation. Dreidel thing.
Camera mapping (Prokudon-Gorsky photo)
Looking good gleb, is that that a 2d figure or 3D, and are you going to rig him?
It’s 3d and even rigged 
somehow, I’m still at very beginning stage of that kind of magic. I’m still not sure, how to animate his eyes properly.
Animated eyes
The first animation, which looks like animation Motion is still bad… have to work more on it and learn more.
