Pretty good attempt

The only real problem you seem to have was with your linework specfically your ghosted lines and planes. while confident your lines are they are very wobbly. This means that while you might be using the ghosting method and shoulder pivot you aren't utilizing them fully. You are still drawing by eyesight and not muscle memory. When ghosting the lines focus on building up the senstation of making the mark with your arm. Then when the time comes to make the mark for real focus on that sensation.

Good job move on to 250 box challenge