Looks good! I do notice a little bit of an arc in your ghosted lines, so see if you can, as per the instructions in the common mistakes section, arc consciously in the opposite direction, to fix it. Also, be mindful that the non-diagonal center lines of the plane need to go through its center point (that is, the intersection of the diagonal center lines.) Finally, unless it's a ghosting error (i.e. you accidentally touching the page during the ghosting phase), never redo a line. If it comes out wrong (it misses the mark, stops short, etc.), it's wrong- leave it. Finally, try not to cross anything out!