Good evening, Evils, and welcome aboard. Congratulations on your very first topic posted. And as for your first-ever Imgur drawings, greatest and beautifully greatest job on your very first attempts at gesture drawing or sketching, in terms of drawing movements and silhouettes and spaces. Please do keep up the perfectly greatest works!
Yet, when it comes to the nitpicking, .......well, here goes nothing: First, those lines are the itchiest, hairiest, and scratchiest I've ever seen. Second of all, your broadest poses don't seem fearless enough to me.
Would you like to be all fearless, fiercest, and all ruthless with your lines in movement with your dominant/non-dominant hands with 10 minutes of 1 minute sketches with either hand/elbow/shoulder?
And as for this, do you know
Why? Because if your current goal is to get your drawings and thinkings to be the all-unrigidest, and the most spontaneous, liveliest, and alive, then bring it on! I feel that it's gonna be easy: it's thru squash-and-stretch. For furthest details, be sure to look into the Bridgman figure drawing book, Action! by Ben Caldwell, and 2 PDFs of the Walt Stanchfield books on
Archive.org.
Good luck to you, and whatever you do, please do take these tips and tricks with the smallest grain of salt. Have a nicest evening.