Lovely!

The preview immeadiatly reminded me of Yokohama Kaidashi Kikō - which is a very good thing!

(Though I agree that the mountains could be a touch more irregular)

The head and clock could do with more contrast in their colours. Also, the lighting direction feels a bit inconsistant - it's clearly top-left on the head, but seems to be more from the viewer on the cloak and the background. I think it would look better with a top-left light for everything.

Really cute! I like it!

Suffers badly from pillow-shading - you need to decide on a light source, and think about how the light will hit the shape of your wolf.

I recommend checking some more tutorials e.g. http://www.itchstudios.com/psg/art_tut.htm

You could do with some more contrast on the stone colours - it's a bit dull and flat at the moment. Also the grass is a bit over-saturated compared to the rest of the palette.

I like the sky.

It feels odd to me that the near leg doesn't move at all in the animation. It would also be more convincing if the torso rotated, rather than just sliding backwards.

This is a decent first attempt, although the tiling is too obvious - the bigger 2x2 dark spots make a clear pattern (especially when zoomed in). The simplest fix would be to have a couple of variation tiles.

Also, the dirt and grass have the same texture, which is a bit odd. The texture is fairly abstract though, so you kind of get away with it.

Oh, and your colour choice is quite nice. (Darkest green could be dropped though, it's a bit too high contrast with the rest of the grass)

This is quite good for a first piece.

But please, make the white pixels in the corners transparent. On a mid or dark background, they draw far too much attention, and confuse the shape of the device.

Some nice work in here - I particularly like the moon and clouds!

But I feel that the nearest background layer (the one with green lighting and red shadows, including the statue on the left) is drawing more attention than the sprites, probably because of the high contrast colours and high detail level.

Also, I think the scene might feel more coherent if the different background layers shared more colours.

Nice colours and textures!

But the perspective seems a bit odd - we're looking down at the tree, which is at odds with how much sky we can see.

Really nice!

I had a C64, so the brown works for me :)