Hello. You did exceptional work completing Lesson 2! I'd say you're miles above the rest, now.

1. Thinking in 3D

Perfect! Absolutely no real issues here.

Here is where perspective comes into play, using the generalized standards whereby the closest objects appear larger and the further away objects appear smaller. Enabling yourself and others to observe and navigate through a flat sheet of paper as though we were physically within there and perceiving its depth is just that - Exploring a 3D space.

Organic Arrows: Complete!

Organic Forms with Contour Lines (& Contour Curves): Complete!

2. Texture and Detail

No issues here.

In consideration of understanding the difference between texture and detail, the three-dimensional forms are bound to the surface of another object, which substantially changes our method of modeling and drawing it. Texture prioritizes the overall pattern formed by smaller forms adhering to a larger surface, whereas detail, by contrast, refers to capturing fine characteristics on an object.

Texture Analysis: Complete!

Dissections: Complete!

3. Constructional Drawing

No issues here.

Given the fact that we need to closely observe our subject matter in order to choose which simple forms to begin with, constructional drawing undoubtedly involves observation. Drawing a figure that appears three-dimensional on its own is one thing, but applying it together with several other given forms in the same area of space creates numerous possibilities for error and paradoxes to materialize.

Form Intersections: Complete!

Organic Intersections: Complete!

Summary

Wonderful! Texture Analysis & Dissections were my favorites among your work.

You may move on to Lesson 3, while adding all of these Lesson 2 exercises into the pool for your regular warmup routine.

By the will of the GREAT CONSPIRACY, you have finished Contour Lines, Texture, and Construction.

Following the pattern of contour lines, our brains can mentally reconstruct the 3D form of a landscape or object. "Telling a convincing lie", as the case may be, involves knowing that these factors (as well as texture and additional details) provide our eyes and brain with valuable information describing just how those surfaces themselves flow through space. Beyond that, every constructional form added needs to relate solidly and consistently to that which is already there in order for the whole thing to maintain its believability and sense of solidity. All while using basic geometric construction to establish the foundational structure of the form on the page.

Amazing job!