Hello Isaias, I will be critiquing your work.

LINES

Superimposed Lines - Your superimposed lines tend to fray at the beginning and arch a little. Try to slow down and set your pen down a the beginning before making your mark. As for the arching, try to use your shoulder to consciously arch back a little into a straight line.

Ghosted Lines - I do not see your Ghosted Lines exercise. Please provide it.

Ghosted Planes - Good job on your ghosted planes, you've drawn confident strokes and ghosted enough to ensure that most lines start at the starting point, though you seem to overshoot easily. Practice should naturally make it easier, though.

ELLIPSES

Tables of Ellipses - Your table looks good with most of the ellipses touching the borders with little or no overlap. You've correctly maintained the 2-stroke ellipse and ghosted enough to keep the ellipses snugly together. Good job.

Ellipses in Planes - Your ellipses in planes are quite good too, having confident marks as it touches all sides of the plane. Nicely done.

Funnels - Good job on your funnels. You're ellipses look good though there is a little wobbling. There is relative symmetry with the minor axis cutting the ellipses.

BOXES

Plotted Perspective - I have no problems with this aside from the fact that your lines tend to arch a bit instead of being straight.

Rough Perspective - Good job on keeping the lines either perpendicular or horizontal to the horizon. You've accurately used the line correction method and drawn through your boxes. Some students go past the horizon or don't line up the correction lines to the corner 'dots' when they draw their correction lines. However, there's a little wobble/curving to your lines. The wobbling we've already addressed.

Rotated Boxes - Most students struggle with this exercise so don't sweat it. Your boxes are snugly together but tend to be smushed a little. Your spatial awareness is good.

Organic Perspective - The organic boxes look good! You've kept a good sense of rotation as well as perspective here too, though I can see some of your lines don't end up connecting. Remember to ghost properly.