So I am definitely more pleased with your results here, though there's one thing I want to draw your attention to, which I addressed back in my initial critique, which I show here. Here's what I said in my initial critique:

You can't cut back across the silhouette of a form you've drawn, because maybe it wasn't the right shape. It's there, it's solid, and if you're going to modify it at all, it needs to be in three dimensions. When dealing with organic construction (animals, plants, insects, etc.) there isn't a lot of room for cutting back into them, so you generally just need to build on top of what you've got by adding more 3D forms. That said, here are some notes about how to think about subtractive construction.

The silhouette is the 2D manifestation of a 3D form - by altering it you're not changing the form in the world. Quite literally, you can think of it as though we're trying to understand some rare animal by studying the footprint it leaves. If you alter the footprint itself, it's not changing the animal itself, it's just making the footprint less useful. You have to actually change the construction by establishing new forms and defining how those forms relate to those that already exist.

Anyway, all in all these are moving in the right direction, so I'll go ahead and mark this lesson as complete.