Looks good! You've put the advice I gave you to good use. Overall, your grasp of spacing is great - the scales on the back of the Camel spider, for example, are really well done and follow the shape well while not becoming distorted. You clearly take the time to plan things out, which is good.

One thing that could help make the drawings more grounded is to implement simple shadow outlines for insects which are on the ground, as Uncomfortable suggests in the lesson pages. This not only increases the perceived solidity of the forms when executed well, but also helps you grasp the drawing you have made in the full three dimensions, as drawing the shadow challenges you to estimate how the 3-dimensional object will cast a flat shadow onto the ground. This is sometimes difficult, especially with really complex forms, but is worthwhile for the benefits it can give.

Something that you could pay more attention to is the contour lines going around the forms - think about how the degree of the contours should change depending on which angle they are being looked at from. Something like this example (https://drawabox.com/lesson/2/5/degree), but keeping in mind that the degree of the contour lines will keep on getting wider and wider as they get further out from the center of vision. The main situation where I see this slip up is on the cricket, as you draw the contour lines on it's 'tail' in the opposite direction of the ones on it's abdomen. This makes little sense in terms of perspective. Also think about what the contours suggest about the form of the object they are describing; on the bottom section of the cricket's abdomen, the contours start going in the opposite direction from the ones on top, and don't feel like they wrap around the form convincingly. Contour curves can describe complex surfaces, but in those cases you have to make sure that they are explicitly passing on the information you need them to, rather than confusing the viewer. Sometimes it can be a good idea to simplify the contour curves, even if they are different in the reference.

Besides that, everything seems pretty good to me. Make sure you're not forgetting to add the small contour curves in the intersections between leg sausages, and good luck with lesson 5!