You can write your topic however you want, but you need to answer these questions:
I don’t know if this is good for a beginner, and I want advice. 
I’m inexperienced in gfx and I’m unsure if I have any potential.
I haven’t asked anyone about it yet, except one friend he said it was nice.
Here are my works.
I can’t find the other one I made.
Thanks for reading! I don’t know if i can do anything with gfx, but I think its decent. I made them back in june?
For a beginner, I think they are pretty good. I’d recommend to focus more on your renders, they’re appearing a bit blurry.
Every artist has potential. Just keep practicing and working hard, and you’ll definitely improve greatly, and get to a much higher level.
They are nice for your skill level. Keep working hard and you’ll improve greatly!
I made them in PaintdotNet how do I render on there?
You should use a program such as blender to render your characters.
The program works very well and is free, so it is definitely worth using.
If you need Roblox render help, there are plenty of YT videos on how to do it.
I’d have to say they both look pretty good.
Like rooboo14 said, they’re a little blurry.
Considering the fact you used Paint.net to make them, they look great.
I think you should move forward by starting to use a 3D program to render your avatars like Blender, or Cinema 4D.
If you choose to use Blender, Blender Guru has some nice tutorials to help you out.
You should try to use a different font for BF:BM. Bebas and Gotham Black are cool fonts. I suggest using Adobe Photoshop if you don’t use it already.
It costs money, and I use paintdotnet, not that. Thanks for the advice.