Starting with your organic forms, it looks like you forgot to draw the spine for them; don't forget it as it's pretty important for alligning the ellipses. The shapes themselves are a bit wobbly as well, so don't forget you need to ghost the forms and to draw them confidently.

On the bugs, I think you're doing a good job with them, though I can see a few issues,I tried to look for a drawing that had more or less all of them, so I picked this one, and pointed the issues out on it .

So, as I pointed out in the picture, the issues I've found are:

-Not sticking at times with the simple sausage shape we should use on dab.

-Skipping constructional steps, for example as you can see on the horn or on some really long sausages you drew.

-Not drawing through, as in the legs for example, for this as I mentioned it's useful to get more reference, as I mentioned on the drawover. Otherwise you can just make a guess about where they start and draw through taking that into mind.

-Not drawing intersections between every form. You do it sometimes, like on the body parts on this drawings, but sometimes you don't. It's important to define the relationships between every form in these exercises, so don't forget it on your next drawings.

-Drawing contours as flat. Just like with the simple organic forms exercises you can draw

And that's all. You're doing a good job overall, but as I want to see if you understood these points, and I feel they're pretty important for the understanding of the lesson I'm going to ask you to do 1 more drawing. Good luck and keep it up!