This is a great piece and really shows how much you've improved! There's so much dynamic lighting and the transparent wings give off a special charm. Though there's always room for improvement Your art always seems to have a specific "style", your drawings have a cartoony feel which is good on its own, but you could strive for some realistic anatomy (such as horse hooves). Remember, those that use reference from other artists drawings won't get better than the artist, which is why there's no greater reference than nature itself! I look forward to your next drawings and wish you the best of luck in your improvements.
This drawing is simply amazing. Fluttershy's mane and tail look really cool and realistic. Her hooves and her wings are probably a little big, but that does not make the drawing look bad. The background is really awesome, I really like the effects and the moonlight. The light and the shading is really amazing here, and it's something that a lot of people don't know how to do, but you have managed to make it look amazing in this drawing. I love the way the parts between the wings' fingers are transparent enough, so the moonlight can bee seen through them. Flutterbat's expression looks great here, and her eyes are really good. Looks like you have improved a lot in two years. Congratulations, and keep up the good work!
The semi-transparent skin of the wings is a great effect that enhances the wing's appearance. One gets an idea of how they would feel like just by looking at them.
It also seems to be one of the few times I see wings on a pony that look like they could actually support the pony's weight (without relying on magic). I love it when things look physically convincing.
Might I ask if it was possible to provide this image in a resolution of 1920x1080 or at least in a ratio of 16:9 for obvious wallpaper reasons? And maybe even without the tips of her wing cut off?
My first impression was that her wings are huge, and utterly dwarf poor Fluttershy (though perhaps the added 'monstrousness' of this works in their favour). My second impression was that this looks amazing regardless, particularly with how you managed to make the wings appear slightly translucent, with the moonlight shining through them. Stunning.