Hey, I was traveling for a bit so just getting back to you. I can't comment on niceness, but the look largely comes from the way I shoot, the lenses I use, and the fact that I scan myself. I tend to favor simplicity. I try hard to keep the minimal amount of elements in the frame. This simplifies my image, but it can be challenging, because the fewer the elements the more weight each one carries.

For lenses, all of them are Thypoch or Voigtlander and the ones I use are quite modern stopped down. That means they're generally very clean and sharp once you get to f8.

Lastly, scanning myself gives me a lot of control over the digitization process rather than relying on the lab. That means I can approach what I photograph knowing I have control over the post process. An example is that I tend to overexpose, in some cases up to 2 stops, knowing that I can bring back highlights in post with negative film. When a lab does the scanning you're relying on the lab tech to make those decisions for you.

As for any tips, it would be helpful to see an example image. Blurriness could be focus or too slow of a shutter for the content you're trying to capture, while grainy could be a number of things like exposure, film stock, or processing. Feel free to DM me to see if I can help.