Lovely portraits, Ilaria. I really appreciate the younger girl's face, which is articulated through colour and form equally. You have some excellent colour that works very well with the paint parks and ideas for the portraits.
I think what you might need to be more aware of in future works is the lines and shapes which echo the right angles and horizontal/vertical lines of the canvases. It tends to make the composition a little obvious and unexciting. Something that completely counters the canvas shape, and also perhaps moves forward in the third dimension - not just an illusion of form but an actual compositional line coming forward into the viewers space is very dynamic.
Carolyn Bannister's "
Don" is an excellent example of using this three-dimensional compositional line, and that is what makes it so strong.