Nicked my first dog

I feel so awful, please tell me I’ll be alright….
I just cut my first ear today, however it seemed pretty minor and quit bleeding up until she shook her head, and I did apply some styptic powder. The owners were absolutely sweet and so kind but I feel terrible and can’t quit thinking about it. I still have her blood all over me.
How do you all recover from this?
Does it heal pretty quickly or should I worry about it not healing for them?