Nihilo (working title) Sans

Hey, I'm a Graphic Design student and this is my first typeface. I've been working on it for a few months on and off. I started drawing a few letters and it's sort of evolved from there, no direct references apart from maybe Fira. Recently I've also been looking at Designing Type by Karen Cheng which I've found really helpful!

I've been struggling with both the lowercase and uppercase S. The uppercase needs the most work I think, because I've done that most recently. I'm working on getting the contrast between the upper and lower right at the moment also.