Alrighty! Starting with your form intersections, you're demonstrating a lot of overall comfort not only with the flat-on-flat intersections, which by this point most students do a pretty good job with, but also with a lot of your round-on-flat intersections, which are definitely a little more complex. You do however still run into some issues with your round-on-round, but I'll provide you with a little diagram which may help you better understand how to tackle them.

Firstly though, whether your intersection is correct or not, you do have to make sure that when you draw an intersection line, that you are making a concrete, intentional decision. Don't hedge. Generally you're good on this front too, but here you definitely were more hesitant.

So, as to that diagram, this shows how we can think through the relationships between our forms, and how things change when we start mixing in more curving surfaces.

Anyway! Moving onto your object constructions, you may think you "failed big time", but that's why you're not the teacher! You've actually done a fantastic job, because you've really adhered strongly to the idea of precision behind each of your constructions. Prior to this lesson, we tend to approach our constructions in a reactionary fashion - so you might draw the ribcage mass on an animal bigger or smaller than you intended, and you just roll with it, making adjustments to your plans and pushing forward. What we do here is different - there's a lot of preplanning.

Precision is often conflated with accuracy, but they're actually two different things (at least insofar as I use the terms here). Where accuracy speaks to how close you were to executing the mark you intended to, precision actually has nothing to do with putting the mark down on the page. It's about the steps you take beforehand to declare those intentions.

So for example, if we look at the ghosting method, when going through the planning phase of a straight line, we can place a start/end point down. This increases the precision of our drawing, by declaring what we intend to do. From there the mark may miss those points, or it may nail them, it may overshoot, or whatever else - but prior to any of that, we have declared our intent, explaining our thought process, and in so doing, ensuring that we ourselves are acting on that clearly defined intent, rather than just putting marks down and then figuring things out as we go.

In our constructions here, we build up precision primarily through the use of the subdivisions. These allow us to meaningfully study the proportions of our intended object in two dimensions with an orthographic study, then apply those same proportions to the object in three dimensions.

Needless to say, it's clear that throughout your constructions you have been meticulous in laying out all of your intentions ahead of time. That isn't to say that all your proportions have been perfect - for example, the bottle of vodka is admittedly probably not long enough (at least if it's the kind of bottle that I'm familiar with), but ultimately for our purposes here, it's not an issue at all. Reason being, you laid out your intent ahead of time, and you stuck to that intent. Even of you started with a box that was yet half as tall, you'd still be in the right - because that is the way you planned it. What was in the reference matters less.

Now, there are some places where more precision could be achieved - for example, your smirnoff label could have been plotted out too, but that's obviously nitpicky. Another such area are the thermostat buttons - you established the left and right sides of the buttons, with those vertical lines, but horizontal lines to define the top and bottom of the buttons would help you to establish a more precise footprint for those buttons, from which to extrude them out. Without that, you end up eyeballing at least some aspect of their positioning, which can lead to unevenness and a lack of symmetry or consistency.

Anyway - I'm really just picking at the only instance of imprecision in your constructions, and it's quite minor. As a whole, fantastic work. I'll go ahead and mark this lesson as complete!