In my opinion, what this work needs is some outlines. If not outlines (you may not want them) then the edges of the various elements should have sharper edges, they shouldn't be as soft. You were clearly using quite a thick brush while painting this, why not try a thinner one for the edges? However, if you do decide to do some outlines, they don't even necessarily have to be black like lineart, they could just be a darker shade of the colour you are painting with, just something to define where for example clothes stop and trees start. Apart from that I think the painting is really good, the colouring and shading was done skillfully. I hope I helped
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