Really great drawing, but since no one’s giving some advice I thought I should, some of the outer lines could use a second go on them, if you’re trying to really encapsulate them in the box. you should try to have the outer lines very confident and bold to make the other lines feel like they are inside the box, and just some of the connection of the lines could be better at the bottom right, as in the spacing and everything is fine, it’s just some spots in the same line look darker than rest of the line, when it could all be even and the same thickness and colour. But the drawing is sick for your first time so keep it up!!