Alrighty! Starting with your organic forms with contour curves, you're definitely moving in the direction of sticking with simple sausage forms but yours still do have a tendency to widen through their midsection. Keep working on getting them to maintain equally sized, spherical ends connected by a tube of consistent width.

I'm also noticing that the degree of your contour curves appears to remain pretty consistent (rather than widening/narrowing as we move along the length of the form). I do believe you understand the concept of how the degree of the contour line reflects the orientation of that circular cross-section relative to the orientation of the viewer, but that you likely just weren't focusing on it here.

Moving onto your insect constructions, I think these redline notes I did over your grasshopper drawing capture a lot of major issues that need to be addressed:

• Remember that we are not drawing a bunch of lines on a page - at least, that's not how you should be thinking about this. We are constructing solid forms in a 3D world. This means that every form we draw must be complete and enclosed.

• Draw through your forms, as though you have x-ray vision. The back leg there should not have been left half-drawn, as this simply makes us treat it as though we're drawing lines, or flat shapes. These drawings are all just exercises in spatial reasoning - to properly understand how each form exists in space, and how they relate to one another, we need to draw each one in its entirety.

• For your head construction, you attempted to capture too much all at once. Instead, start with a simple form and build your way up, adding more simple forms as you go, always keeping in mind how they all relate to one another in space. You can see the little demo I drew there about how I start with a sphere. It's not really meant to be a detailed demonstration, but you can see a similar concept covered in this demonstration on how to build up a claw.

• You're not employing the sausage technique. when constructing your legs. This method is extremely important, as it allows us to capture our creatures' legs (be they insects, animals, or whatever else) in a way that appears solid and tangible, while remaining gestural. The key however is in actually using simple sausage forms (equally sized spheres connected by tubes of consistent width, which admittedly can be somewhat difficult to draw at a small scale), having them intersect properly, and reinforcing the joint between them with a single contour line.

On the topic of the sausage method, I can see that you tried to employ it partially in some places, like this bee, but we can see that you're only partially sticking to simple sausage forms. It is good that you did add additional masses after the fact to some parts in order to bulk them out, though more recently I've found that the approach detailed here is more effective.

The whole concept of focusing on simple forms is really important, because every time we introduce more complexity to a form, it becomes harder to make it appear solid and three dimensional. So when we're looking at things like this praying mantis, the long, narrow thorax is far more complex than it needs to be, in how it gets pinched through its midsection and swells out towards the ends. Maintaining a consistent width (just like in the sausages) helps maintain this simplicity and the illusion that it's a real, solid form.

Now, I think I've covered a lot of points here, and it'll take some time to properly absorb it all. Once you've been able to properly take it all in, there's some additional drawings I'd like to see before I can let you move on.