Those legs and feet look very unnatural, you need to practice some anatomy and organic shapes in general.
Other than that they just look generally poorly made, the sock is unevenly thick, the shoes are oddly thin and the strings are far to thin and tiny for tf2, use scouts MNC shoes for reference.
The calves could just as well be copied from the standard model or the ali baba booties, both for consistency and saving you the trouble of getting it to look more natural
and why 50's when tf2 is set in the late 60's?
High tops also reads better as classic basketball shoes
(If Ronin: This is possibly worse than the horribly awful cowboy boots.
Get your shit together for gods sake we all know you are able to make fantastic stuff)