I am quite new to this forum, but the forum looks inactive as hell.
I really like your artwork, especially the weapons, but I think you can improve.
The Pagoda/House has straight vertical lines as walls, I recommend using some dithering there.
The cat/bunny with the hat has a face/skin that has only one color, this gives the effect that the hat is so big, that it stops light from even reaching any peach of skin/cloth/face, I recommend adding some extra shading here and there.
Most of your artwork uses very flat shading, sometimes to flat, like in the grass of the pagoda.
There is quite a lot of banding here and there, like under the grass of the pagoda.
Your palettes could use more hueshifting, try this tutorial: https://www.youtube.com/watch?v=QhgSM_tnPM4, He has a lot of very good tutorials you I recommend watching.
Oh, btw, I also like the way you shaded the roof of the pagoda, and the skirt of the bunny/cat.
Here is a general tutorial to understand what I mean: http://pixeljoint.com/forum/forum_posts.asp?TID=11299
Here is a discord server I recommend you join for extra feedback: https://discord.gg/mcePYWu
Keep it up!