The attack feels very low-energy, and the way the character draws their arm back looks painful. Have the body rotate into the wind-up (away from the viewer), and then rotate into the attack (toward the viewer; as it currently does). The motion will also feel more natural and energetic if the body leans back with the wind-up and forward with the attack.

These kinds of rotations and leans are easier to plan if you roughly block the figure in for each frame, instead of moving parts of a still sprite around. Moving parts around is good for after you already have a sketch and know which parts would be reusable and where.

I think they look good!

The blue doll(?) feels a bit pasted on, it doesn't look like it's sitting. This is for a few reasons:
- It's almost touching the top of the shelf, "tangents" like that feel a little awkward. Maybe have it sit further back, and have the top of its head obscured by the top of the shelf?
- The legs don't appear to be bent, but we're also not seeing the bottoms of the feet.
- It's unclear whether the arms are hanging down or out, and whether they're bent or not.
- The shelf doesn't cast any sort of shadow on the doll, and the doll casts no shadow on the shelf.

Are we seeing the front of the NES controller there, or is that the front of the shelf?

At this scale, you probably won't see much texture on the road, so the lengthwise little 2-3px shadows probably aren't needed, they feel a bit noisy. You can still imply the texture of the road at its edges, and with the edges of colours, the way you're doing with the grass.

Try to keep the grass the same scale around the road as you have it elsewhere. So, don't shade it. If the grass blades aren't very visible, that's fine, because they still do their job of breaking up the silhouette.

You could also vary the road's colour in different areas, to show the different materials, such as near the top where it should probably be bluer. Your palette seems to allow for it.

If you want a more natural look, then consider taking the "perspective" into account, i.e. making the horizontal stretches narrower than the vertical ones. You could also make the road more winding in general, with more obstacles for it to get around, plus more minor width variations where the grass/snow/whatever just happen to creep in a little more.

With the roads, think about what they're made of, and try to show that material. The surrounding grass, etc will probably overlap the road in many places. You can also give the road more "character" by making it wider and narrower in places, depending on the terrain and how much it's used in that area.

You're on the right track, but you should push the view even more. The shoulders can appear to emerge partway up the head, and we'd see more of the top of the head. Everything should be foreshortened, and elements that appear horizontal in side view (such as the bottom of the robe and the sleeves) should appear curved around the figure.

Here's an edit, but even this can be pushed more depending on the particular sort of look you want.