Hi Pedro! Great effort. If I may I would like to point a few things out to you that might help you. First I would direct you to drawabox.com they have easy to follow lessons with video instructions to help you achieve a greater control over your line quality. They will also teach you the proper way to approach geometric forms with the right perspective. Right now your geometric forms are not accurate, to make them better you need to understand 1point, 2point perspective properly. As for your figure drawings, I would ask you to focus less on details and more on the overall gesture of the pose. Watch proko’s gesture videos and try to use sweeping lines (C,I,S curves only) to make your gesture poses. Try to emulate Stan’s line control and decision making. These things are important to pay attention to as they bring more life to our drawings otherwise they might seem stiff and loose. Keep learning and posting your work so we can see you progress! Hope this helped.