To get into straight razor shaving, I bought a disposable blade razor. The issue I'm having isn't until after I shave. After rinsing away the excess soap and whiskers, I notice that my face looks like it was scratched by tiny claws. They're not cuts and they don't hurt, but it makes it look like I shaved with a rock on some days. I'm not sure if this is something to do with the brand of blades I'm using or if it's because of lack of experience. Any help is much appreciated.