Starting with your organic forms with contour lines, these are solidly done. Your contour curves wrap nicely around the forms, and the forms themselves adhere closely to the 'simple sausage' characteristics outlined in the instructions.

Moving onto your insect constructions, some of your drawings have come out fairly well, while others do have a tendency of appearing somewhat flat. One thing I noticed early on in your mosquito was a tendency to put some marks down more faintly, and others more heavily giving the impression of an underdrawing/clean-up pass. That said, I'm actually not sure if that was intentional. It's possible that your pen was just dying, so I'll leave it be unless I see the issue in later drawings.

I think your follow-along with the louse demo came out exceptionally well. You demonstrated a solid grasp of how all your forms related to one another, and you even went so far as to apply the sausage method correctly despite the fact that I'd left the contour curves at the joints between sausages out in my own steps (which was a mistake on my part that I've left in there to see how other students would handle it).

This wasp is quite the opposite however - most of the forms here along the main body feel extremely flat, and there aren't really any clear relationships established between the forms that emphasize the idea that they're supposed to be three dimensional. For example, the little pincers at the front of the head have a very shallow curve where they meet the head. Pushing this intersection further and taking more care in how they're drawn would certainly have helped make the head appear more 3D. In addition to this, the fact that you drew the eye as small as you did does suggest that you may not have been studying your reference all that closely. Wasps' eyes are actually quite large relative to their heads.

Also worth mentioning is the fact that the wings were drawn to be quite complex right off the bat, instead of applying the constructional techniques outlined in the last lesson's leaf exercise (where we start off as simple as possible, then build up the complexity in subsequent steps).

Jumping forward, for this spider, the legs are a bit lazy in terms of where they do/don't apply all the principles of the sausage method, but I am still pretty pleased with the drawing as a whole. This is because the core body feels very solid and three dimensional, and the way the legs were drawn does a pretty good job of establishing its relationship with the ground (at least for the two front legs on either side - the back ones feel a little less solidly grounded, so actually deciding where the ground is ahead of time can definitely help with that).

The dung beetle is another of the weaker ones, and one of its biggest issues are the areas of thick black you added. Now, cast shadows can be used very effectively to separate different forms (and you did so a little better in the orthoptera on the next page). The problem here is that instead of drawing shadows being cast by the forms present on the construction, you seem to have filled in gaps between the segmentation, or in some cases, simply made the edge of a given form very heavy in terms of line weight. The difference between line weight and cast shadows is that cast shadows are projected from the form onto another surface, whereas line weight clings to the edge of the form. Furthermore, cast shadows don't fill spaces - the area they cover is directly related to the nature of the form itself, so when you've got little cracks, you won't necessarily see the shadow fill them entirely.

To round things off, your hemiptera is quite nice, and again develops forms with strong relationships between themselves, and as a result they feel solid and three dimensional. Overall, throughout this lesson you jump back and forth between good habits and bad ones. As such, I'm not going to mark this lesson as complete just yet, and instead am going to give you the opportunity to show me with greater confidence that you can apply the principles correctly with consistency.