my advice? there will be plenty of time to swing for the fences. (soldering guards). Right now, focus on mastering the basics.
You are off to a great start. From what I see, your immediate goals should be to perfect your bevel grinds and to keep developing your eye toward proportions. Believe it or not, one of the hardest things to do is to get handle shapes and sizes right. The handle, not the blade, generally determines the flow of your lines.
For example, in your pic above. The spine looks great. Where you need some work is the bottom. It appears like you aren't sure where the blade should begin. The reason for that is because the handle isn't defined at the choil / ricasso area. Once you sort that out, defining the heel of the blade will be easy peezy.
Form follows function. Is your hand likely to slip forward onto the blade? Maybe a deeper area to butt your fingers up against is in order. Yes, you could add a guard but that's a whole 'nother skill set. I'd keep that idea in the back of your mind while you figure out how to integrate a guard-like shape into your blade.
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