the stance is now much better than in your first one
But while working on the pose, some new issues occured.
It seems that you have general problems with proportions and planes in deep space.
Your current sprite is atm 5 heads high. This can be pretty fine as long as you want a cartoon figure or somewhat similar. But you chose TP as reference for your costume and so I think this happened just accidentally.
It's a good thing to know of the most common proportion canons for the human figure. A easy thing is to measure the body height and width with heads. If you are taking the measurements of common people you have a heigth of 7.5 heads and a shoulder width of 2 head-lengths (for men).
but there are some more possibilities you can use - pay attention to the shoulder width and the points where each head starts or ends, the grid is equally to head-lengths.
Just by doodling a figure, it's possible to maintain the most important proportions. After all in this early state it's possible to change the whole shape within a few seconds to make it right - the big advantage of any digital media. You can see how much impact even some pixels can have.
I just doodled the figures straight ahead - regarding to the chart above there are some improvements left to make.
The next thing is that you should also measure planes like the shield roughly with your eye. I don't referenced it but regarding to my memory links shield has a height to width ratio of about 1:0.75. The widest part of the shield is in a height of about 0.75 - by recognizing this keeping it roughly in mind you can draw the shield more appropriate. But foreshortening can affect the ratios heavily. If you don't know the ratios or exact forms you should also use some reference - I was too lazy to get one
The first thing you should worry about is to get the body without clothes right. After you set the proportions and the pose right you can add them pretty easily - also with some flat shapes.
If you aren't very experienced at drawing I'd heavily recommend to use a reference - this helps to spot issues - and if you know of your issues it's easier to work on them.