Good job on getting all the way to lesson 6, let's get right to it.

Starting with your form intersections you're showing a pretty good grasp on intersections involving two flat planes. I drew over some of your intersections here to clarify some curve-curve situations. The big thing here is just mileage and getting a feel for these situations, and you'll continue to get exposed to these in lesson 7 as we deal with vehicles which very commonly have these compound curves. You did pretty well with a lot of these situations but I still like to link this informal demo that Uncomfortable drew up to further illustrate the thinking process. I also drew up a cone sphere intersection because yours were so small we can't really catch the nuance. I tried to label how the curves follow on form then the other: the cone, then the sphere, back to cone, back to sphere, and finally along the cone again. You're on a great start here and you'll keep getting better with more practice.

Looking at your objects, the trend I'm seeing throughout is lack of orthographic studies. Myabe you did them and just didn't post them, but it would have made things easier to check your methodologies.

Your remote is a good start. Just remember that since you are allowed to use rulers, take advantage of that and use it to visualize how your lines will extend into space so you can better nail down your perspective.

The pot lid had some troubles with the lid, and in the absence of knowing exact perspective etc from an orthographic study I am showing how to build it out with my own proportions (still using subdivision method). I start with a build of the middle plane and then for demo purposes I need to lower the opacity to show how to build it out front and back I simplified a few things, like just having lid+handle and omitting the platform the handle is on, but this should show you how to think about this stuff. You can see how yours ended up pretty off center by not first establishing center planes and not using mirroring techniques. That's ok though, this is the first time many students have seen this way of drawing and it can take some time to get your brain to shift gears.

Lantern: great. no notes.

The perfume bottle is a big offender of no orthographic (and therefore proportional) information. The neck and lid are added on, and the structure is solid, but arbitrary. At the very least, I would have liked you to build out the top box from the neck like this so you can ensure all of the main forms are centrally aligned. You did a much better job on this with the charger.

There's something very pleasing about the slipper. I think it's because you kept it simple and didn't try to shade or texture the drawing which is a trap many of us would fall into. I'm obviously not sure of the actual structure of this slipper, but adding some thickness to the part that goes over the foot would take this drawing to the next level.

Overall you're on a good start. Just really watch out for respecting proportions and orthographic studies as with lesson 7 everything lives and dies by it. Keep up the good work and I think you're ready to move on to the wheel challenge.