Starting with your Organic Forms, you’ve done an excellent job here of keeping your sausage forms simple, with both ends evenly sized and no unexpected pinching or bulging, nice work. I can see you were varying the degree of your contour ellipses to convey the forms’ orientation in space too, well done. If I had to give you a nitpick to work on I’d say a few of your contour curves just look a touch hesitant, so that’s something to keep in mind for warm ups.

Moving on to your insect constructions your work is generally very well done. You’ve clearly been taking care to build your constructions additively, starting with simple forms and adding complexity one step at a time. I only found one tiny place (between the thorax and abdomen on your fly) where you’ve cut back inside your initial masses, or disregarded a form that you’ve put on the page, this has resulted in drawings that look solid and believable bravo!

You’re doing really well at adhering to using sausage forms to build your legs, but it is a bit hit-and-miss whether you remember to use a contour line to define the intersection at each joint. These marks are tiny, and easy to forget, but they really do convey a lot of information about which way the legs are facing and how they bend, so try to remember to put them in.

I’m noticing a trend in some of your insect constructions that you’re drawing them in different orientations than the reference images you’ve shared. It raises some questions about whether you're trying to invent an orientation before you've really established a solid grasp of what is actually present in the reference images you've got. If this is something you’re doing deliberately I think you may be creating unnecessary difficulty for yourself and distracting yourself from the primary goals here. If I were to invent my own orientation of something new to me, I'd first start by doing a bunch of studies from actual photos to flesh out my understanding of its nuances and construction. If these changes in orientation are happening by accident, then I’d definitely suggest taking more time observing your reference and planning your construction. I’ve popped a couple of notes on your lobster here https://imgur.com/a/pCKSul1 which you appear to have changed from a 3/4 view in the photo to a side view in your drawing. There are instances where you’ve drawn a different number of eyes or legs to what is present in the reference provided, and your cricket’s wings are missing.

Proportions are very much a secondary goal in these lessons, but when parts of a construction are double (or half) the size they should be it does give cause for concern. For example your Scorpionfly- the wings in the reference are significantly longer than the abdomen and in your drawing they are much shorter than the abdomen. I suspect this may have happened due to running out of space on the page, but could be avoided by planning things a little better. Take a moment before you draw to look at the reference and figure out what part is highest/lowest/furthest left/right and make sure you leave space on your page for them. You can place dots to plan where the tips of things like antennae, legs, and wings will go if it helps.

Conclusion

I think you’re doing really well! Your constructions look solid. Remember to give your observation some love, pay attention to those references. Carry on with lesson 5.