Good execution. Glean Keane shades his sketches with what seems to be a side stroke of his pencil. Your shading lines are too clear and precise. But that is a minor critique, overall your studies are successful.

Hi there! I think these drawings turned out really nice!   I would say that the best thing to do right now is to go ahead and watch the demo. After that, make sure to give the project another try. This type of exercise can be a bit uncomfortable if you’ve never done it before (at least that’s how it was for me). However, once you get more familiar with being in this state of exploration, practicing drawing from imagination becomes really fun.  I also noticed that your lines show some really nice confidence, but after multiple passes they end up looking a bit scratchy. What really helped me was to give the colored pencil a try. The waxy texture really allows you to be more loose with your lines and it’s much easier to control the pressure. This is especially useful in situations like these, where you have to explore a lot and where the first line you draw might not be the one you were looking for. For me it made a really big difference and I would encourage you to at least give it a try. :D I hope this helps. Good luck!

Nice, cat content always works :-). Is the 3rd (red) one also from pinterest?

I think your second picture is very dog in terms of using simple shapes and values. However I feel you would have have a much easier time if you constructed the head first. That way, the proportions would be correct and everything would line up with eachother, but of course this is a beginners course so in time that skill will be covered.