Fluttershy can make even winter be cozy and warm. Especially the way you draw her No really, I love how you drew her with the scarf and the boots, only the conifers in the background look kinda flat, but that's just a minor thing I noticed.
... <a moment of silently looking at the picture> [Oh my gosh you Fluttershy so cute! So cute! So cute!...] + [random squees and "mhmmmm" noises]
That's truly your best work so far and one of the cutest Fluttershy my eyes have ever seen! I can see it's a bit different than your previous works. This pony has got a fur! Moreover, this pony is Fluttershy - Fluttershy + fur doesn't end well (for your heart, of course). I would like to hug her all the time and warm her as much as I can! This is definitely a step in the right direction.
Her anatomy is a bit different too, as I see, what makes the second "the right direction" thing in this awesome drawing! There is nothing better than Fluttershy and her knee, which is just so natural and beautiful (yea, I think I'm obsessed with Fluttershy)!
Those fluffy (!) shoes and her hooves in them, stamping lightly on powder snow - it's just too much to handle for my heart! Also her tail touching snow and this scarf around her warm (probably) neck. Don't get me wrong - I'm not a clopper, but she is so cuuuuute! :3
The snow overall is made excellently and all the stuff in the background fill the rest of the drawing perfectly. But who cares about the background (exception: the snow, what makes about 50% of the climate) when we have got so cute Fluttershy in the foreground!
I just saw the warm air coming out of her nose... [heart explosion]