Well done, Amanda
You understood the principles very well, most assignments have the correct perspective. It is not yet natural, but that is normal, it needs a lot of practice.
One sketch is rather bizarre:
I assume this is one
object. But then - sides being parallel - it can only have one
VP to the back. Remember the parallel railroad tracks, this would be very surrealistic:
It seems deformed too much if I keep the two VPs of the table surface at the same horizon line as others.
There is no way around it, all VP's of horizontal lines lie on the same and only horizon line. Your problem stems from an error of observation (or possibly because of trying to draw from imagination).
Draw what you really see, don't be misled by knowledge/memory of how the subject looks in an abstract environment.
You can view from more above the table (high HL) or more from the front (low H). And remember, "horizon line" is a more scientifically sounding synonym for eye level.
Both are correct, but not
The form of the objects on the table (a lot of the top plane visible) suggest a high HL.
Keep up the good work