Hi Crimson! Welcome to the guild and good to see you posting a variety of different things!
Nyebe's already addressed the animal drawing, and you've already made note of working on the legs so I think you're covered there. Always a good idea to cross reference an animal close to the one you're working on to check how their joints work cause their back legs especially tend to be a reverse of a human one in terms of the way it bends.
With Yonuda, the Dragon Girl, I had a few things I wanted to bring up with you.
Her concept itself is really nice and original, so good job there! I also like the outfit design and the little accessories you've given her!
1) Hips - don't forget that even if it's towards the back it's still there! Your thigh comes out from the hips so there's always that sort of flat plane in between the stomach and the leg!
2) Feet positions - Okay, so I can't personally float so not sure exactly what would be comfortable there though super heroes certainly like to point their toes down. I just wanted to bring up the fact that if you have your body turned to one side - having your front foot facing, well, US, directly is actually really awkward. If you raise that leg to get that slight incline you have going with the thigh, and have your lower leg dangling it naturally faces the way you are facing. When you turn the foot outwards at the knee, things become a tad more awkward feeling.
What I drew was basically if she were standing flat - the forward leg would be holding her weight, allowing the back leg freedom to move as it wants.
3) Proportions - Handy tip, your thigh bone is actually the longest bone in your body. You've got it a tad on the short side here if we were following more human proportions but if she doesn't follow our proportions directly then disregard this part! Personally, if from where my thigh bends to my knee it's roughly the same length as my elbow to the tips of my fingers. It's cool when you can use your own body as a ruler for things like this
wink 4) Shading - I know these might just be sketches but to get things looking neater you could try a variety of shading techniques that will stop that sort of looped double up I can see happening.
You might have heard of these techniques and some others before and I'd definitely urge you to try it out - contouring especially helps you get a grasp of a figure as a 3D shape.
This is also a really handy link that shows more techniques you can shade with.And this is an example of shading with only lines:
I think you're doing great though so keep up the good work and interesting ideas!