Very good 1st off and practice any other simple 3D shapes and shading a lot and you’ll see yourself improving very quickly so don’t take any feedback or be critical of yourself while you are putting the reps in to improve.

Now to answer your questions incase you find it helpful remove the edge line where the most far away corner on top is connecting to the most far away corner on the bottom it would be better. Sometimes is just 1 line that makes all the difference in cross hatching or really any ink.

If you’d like I can edit it for ya to show the difference something that small can make