Other things to note is to just study clothing through reference images and looking around and at other people irl, see how or what realistic folds look like and looking for patterns from there to make it not just a jumbled mess of random patches of nodes sticking out.
A good example is the long sleeve you showed here, you can definitely make use of bigger shapes and whatnot to add small but noticeable improvements, id show examples but im rusty and like a boomer, dont know how the hell this site works…

Another is adding things like lighting and shadows to creases and such to make it less bland and flat, the colors you use is also integral to making it look as lively and neat as possible. Great beginner guide regardless id say
Now wait till people call me out for these blatant lies-

To be fair, i cant animate either…
I literally just use sticknodes as a discount art program