Drawing with limited palette.

hi Julia!
It was a very good class! I enjoyed a lot working on it!:)
I show you my work following your class although I have changed the materials.
Indeed, I had some drawings in mind to put them color and here are my first thumbnails:
and the final painting:
It's a pity, but in my opinion it lacks expressivity, I have tried hard not to draw the outlines I am used to apply in every drawing/painting but I do not know how to give it "something" to pop.
In the first sketches I wanted to place a lamp, but I knew it was difficult to make the lighting, so I decided I'll try in the near future.
Don't you think it lacks a bit of strengh?
thanks for your classes!! :)
Anna