Hey Miguel, It's cool that you are trying to say something with your painting. Because you are using a representational image of a woman, you should make sure that it is solid in its structure. You have some anatomy and proportion issues, as well as some issues with edges and values. The pose is really nice, but feels a little unbalanced, like she's falling to her left, which you might have done on purpose for effect. I did a quick drawing to show the things I'm talking about, I hope you find it helpful :)

Hi Miguel, I like your somewhat expressionist style, I don't know what you mean by your request, the head seems a bit small in relation to the torso, if you want to increase the drama (my guess), you could try exacerbating the torso twist.

Hey this is really appealing! Could you please say a bit more about what you're intent is with the drawing? What your goal is with it? I could give input, but it may be inapplicable for what you're wanting to do with the drawing.