It's really more than just the hands and feet that are disproportionate and tiny.
You really need to work in a basis of realism before moving onto heavy stylizations. When you can accurately depict whatever species she is and have it look 'real,' then you can move onto deforming the head and face. It helps everyone else know what it is, rather than only being able to run on the assumption that it's 'just some canid thing'. The thing that really bothers me about her face right now is her chin, how it looks like she really doesn't have one.
The neck is stiff, and her skull seems positioned far too back on it.
The arms are far too small and lack depth - not in the fashion that it's a line drawing and therefore flat, rather that it's fairly obvious that you do not understand what the understructure (bone, muscle) is.
The torso feels far too short, you have the outward bulge from her hip far too high up and it makes it look like her hips just go on forever.
Definition of the clothing under the breasts is wrong. She is not over endowed, and the clothing is not tight enough to create lines at the very bottom of the breasts. Clothing tends to stretch across the widest portion, leaving the lines and dimples in the shirts there.
The definition on the pants across her thigh and front makes her mons and thigh look ridiculously huge.
Thighs, knees, and the calves all show a lack of understanding of the anatomy.
How to fix all of this: study anatomy. Skeletal structure, muscular structure. Pay close attention to proportion, look at various references. If you can, draw from life.
The cloth all looks very flat and poorly thought out. Again, study this from real life.
Drawing hands is also one of the most difficult and ridiculously easy things out there, considering that - assuming you still have both of yours - you will always have at least one to use as a reference.
Do not hide lack of knowledge of the foot anatomy under shoes. While it is important to understand the structures of common footwear, knowing how the foot works is essential.
I would also suggest you train your eye to see things. Look at everything as if you've never seen it before. Focus on the edges - the contour - of it, its curves (or straight edges), how it moves if it does move, and how its edges meet up or move away from you in perspective. Later on focus on how light falls from those objects, whether there's an edge on the far side that is also illuminated or whether it just recedes into shadow.
Learn to use your media. I get the feeling that this is a 'first' on a tablet?
So you should get comfortable with how it works, how when you move your arm (I hope to God you're using your ARM and not your WRIST) a certain way the line forms, how you can change things depending on pressure. Work with a lower opacity than 100%, get used to creating gradients. Learn to make smooth transitions from black to white (or any color to another, but black and white is basic and you should know it first) with any opacity less than 100%. Get comfortable making long, smooth strokes instead of short jagged lines. You do not need to spend an hour slowly and painfully trying to make a line work right.
I would actually suggest putting it away for right now and learning to work with traditional media first. Assuming you're on anything less than a medium sized Wacom, you're absolutely murdering your wrist. Traditional media can go on forever, you can more easily throw your entire body into a large picture, better allowing you to pour your blood, sweat, tears, and soul into it.
Except don't paint with blood because that's horrible and disgusting.
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Later on, after you get the basics of anatomy and your media down, you can move into more dynamic poses (something a bit of psychology will only help out, so I suggest learning a bit about posture from a psychological viewpoint), as well as color (which you can study from real life, although color theory - as horrifying as it is - will definitely help out).
But seriously, don't paint with blood.