All nice stuff Silvanter.
At the moment I would say to work on the form and substance of your work. All of your images are bright and clear, which I really like, but they are all very flat. Imagine your subjects as three dimensional objects, because to me at least it seems that these drawings and paintings are a collection of flat shapes arranged to fit in the composition, a bit like a collage.
What often helps is softening up some edges so that the viewer can see that the objects curve away. You could also try using shadows and highlights with a greater contrast (but keep the gradiants smooth) to bring forward the lighter areas and push back the areas in darker shadow.
Looking forward to seeing more!!