Great work on your quicker sketches in general, ChiliSoda, that's a mighty finest job indeed!
In general, your curves are more organic and the most readable in terms of the outlines. Your poses are boldest, and finally, very clearest in their silhouettes, in terms of the most action and mood.
So, my biggest critique would and should be that your caricatures satires of the bodies are not the boldest and powerfulest enough yet. Would you please be able to do 2 minutes of 1 minute poses??????
The reason why you could and should do this is because, practice makes progress, not just perfect, and your lines of rhythm will become the least stiffest, and the most solidest, fluidest and liveliest.