In the argument between "what's worse to have infesting your house - bedbugs or cockroaches?" let it be known that Tiny chose to invite both.

For what it's worth, I primarily focused on the dragonfly. The bedbug was actually quite well done overall. The cockroach was definitely the weakest of the bunch, but I just can't stand to look at that reference.

The most important thing to remember when doing these constructions is to always define how different forms connect to one another. This will help the forms individually feel more three dimensional, while also making them feel more cohesive as part of a larger construction. Also, as I mentioned before, keep an eye on your proportions.

For your dragon fly, the only thing I really wanted to touch upon was how you approached drawing the tail. I show here how to approach it - building the segmentation one by one, creating a fully enclosed form that wraps around the underlying structure. This is much closer to what you did with the bed bug. Also, a minor point about the wing - don't forget about always going from simple to complex - meaning you can create a simpler shape for the wing, and then cut back into it to add the complexity, as shown here.

Anyway, all in all there is definitely improvement here. There is plenty of room to grow, of course, but I'll let you do that in the next lesson. Consider this one complete.