*Heath Evans

[Thor]

Last time I didn't want feedback or anything - this is a more genuine and fleshed out attempt and I'd like to know what to improve (text for sure).

I did this entirely on my phone too so don't be too ruff

[Nokazoa]

Since you want a better breakdown, I format this in a different way

Sig 1: 2/5 - 400k - Use fo space, lack of depth, and text. I'd even say enlarge the render to be cut off at the top, and add some sort of gradient to help with depth. If possible, you can add your own shadows to help with this. There is also a lot of wasted space which is a common issue for beginners.
Sig 2: 2/5 - 200k - The biggest issue for this one is the background and text. I would also say the rendered cut is lackluster here. If you are not already, you want to use a render of a very high resolution and scale down. For your text, I would use this type of font sparingly. It can work but for a card that is meant to be believable, I find it hurts. If you used a real card as inspiration, please let me know!
Sig 3: 2/5 - 400k - Surprisingly no jersey swap! So for this one, there isn't a lot that ties this together. Its two renders, two (maybe three is you didn't add those light sources yourself) background images, and text repeated three times. The elements do not feel connected. Enlarging your primary render and creating some overlap with the text could help, and you could also add some gradients over the sig but at a soft light layer to tie it in.
Sig 4: 2.5/5 - 550k - Combine the issues before to 1 and 3. I like the cutoff idea, but I would only let one element go out of the background.
Sig 5: 1.5 - 275k - Meme sigs default to this, but I find it a really good one.
Sig 6: 2 - 400k - Enlarge the render, add a vignette to the background and I think you have a potential three. Strongest text by far.
Total Payout: 1.865m

The biggest issues are the use of space and the hierarchy of elements. In sigs your render is typically of biggest importance, followed by text then the background. All the elements should feel cohesive and enhance the sig. Vary the elements within the composition and make sure the choices are meaningful to some extent. You will notice I say to enlarge the render more, and that is for this reason. Also, rule of thumb, you either want to cut something off by a good bit or to leave a gap between the border and your render.