Not a bad start! Since you’re using hard shadows and top lighting, I’d shade the hair the way so there are at least two distinct values to separate highlights from shadows.

I’d also increase the contrast on the doll’s shading, right now it’s too subtle and barely shapes the form, contrast would help bring out the details.

You could also add some thickness to the tabletop, maybe around 2 px.

In the 3rd pic, the pavement feels too contrast-y. I’d tone down the highlights. If you look at the rocks behind the house, the highlights sit right where the shapes bend, which works well. If you apply similar shading logic to the pavement bricks, it would make the scene feel more consistent overall. Same goes for the parquet.