Not quite sure of the creative decision with the font. Not huge on the font choice and color palette used. There's is just many tint of orange in the whole sig, maybe that's what you were looking for ( a monochromatic look), but I personally, think a lot doesn't match with the contrast and such. As for exemple, the orange tint of the jersey is more saturated than the background one, then, the orange usef on the text is more yellow ish, and fits more with the background. However, having them layered, (background, render, and text), not quite sure it fits as a whole.
Going back to the text, the drop shadow used on the sub text (riga reign) doesn't work here. I guess it was used to add some contract so we can see the text better, but I think the drop shadow isn't helping the cause here.
And I'm being picky, but I know you can take the artistic criticism (not like many others in the VHL for comparison) , but I think the render efx is flat and boring in this scenario. Like, I get the light source is coming from the back of his head,but after that, the whole lighting of the render is pretty uniform, which I don't think match the direction of the initial light source. The edges could be also darkened to add a vignette look, it would add some dimension to the sig