/ic/ - Artwork/Critique

So I've gone a few years without drawing anything. I am now surprisingly bad and it frustrates me. I've been redoing all the beginner stuff but I am stuck in this shitty area where drawing cubes and shit is routine but figures all look shitty in motion or doing anything other than just standing there. what exercises do I do to improve?

I request proportion and reference "cheat sheets" like this one, aside the ones you can easily find on google.

I personally want any reference for different body types, like spider-man thin or bear-mode bulky, with ruled proportions, but anything interesting you contribute will be nice! Also any interesting and dynamic anatomy reference drawings or pics you like would be cool.

I belive that this kind of thread already has been posted, if so any link do an archive, dump folders, etc. would be highly appreciated!