Concept art additional studies

It doesn't matter how experienced you are, it's always great to learn and develop further, some would say. Well, at the moment, I have completed the additional concept art course that i took to refresh my knowledge and stay in tonus (it has quite fast program), in which I learned a lot, despite my vast experience in digital illustration. Most of the tasks here were about shape, weight, and design of objects.

A couple of different task examples:

Here I had to choose an item from a list and come up with a story for it, how it changed over time, what happened to it. It was required to add variety, but maintain continuity

This task was to choose an item/character (it's chicken for me) and think over its design in three different ways, then make the resulting four, which would have absorbed all the best.

Working out the proposed lineart techniques:
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