Gonna try and hit you with some quick points:

• Your leaves flow quite nicely, and you're building up the edge detail quite nicely, sticking closely to the simple structure of the leaf that you'd drawn in the earlier construction step

• Your branches are alright, though I'm seeing in a lot of places that you don't extend your segments halfway to the next ellipse. This isn't always the case but it seems that on a handful of occasions you forget. Getting those segments to flow right into each other, overlapping them directly with the next line and so on are important elements to this exercise.

• Your plant constructions are generally looking pretty good but I did notice that on the left side flower here you've got your edges zigzagging. They're sticking to the simpler structure nicely but don't forget how in lesson 1 the rule about maintaining a consistent trajectory is introduced. Drawing each bump as a separate stroke keeps us from falling into autopilot mode, and helps us design each one specifically.

• On your cactus, don't forget the importance of drawing shadows for your texture elements, not outlines. Same for the pitcher plant - you drew a lot of lines, and you should be focusing on drawing shadows cast by the little raised bits along the surface of the plant. If what you see there is just patterns then don't draw it.

• Trees (specifically tree tops) like at the end of your set are definitely difficult. When you've got a lot of different leaves clustering together, it becomes better to treat them as large masses with a texture of leaves, rather than a bunch of individually constructed leaves. That means focusing more on the silhouette of these masses, and also focusing on little shadow shapes internally.

You're doing a pretty good job, so I think it's fair to mark this lesson as complete.