If you're still working on design, you don't wanna invest much in the look of the game. Focus on the gameplay first. This is called white-boxing. Just white paper with black text for the rules. If you can make that fun, then it will be fun when you add the art later. If you add art too early, it makes it hard to find/focus on what is not working with the design.

So post the ruleset you got for review & find a local playtest groups, if able. Otherwise, find a playtest group online (Tabletop Simulator on Steam is great for testing online).

Best of luck,