Never gotten browns done before - seeking advice on what to ask/do

hi there! i am going to start exploring prepping my face for my wedding when i am a year out to see what i like. ive never gotten my brows done before, usually like pluck any excessive, but want to possibly thread and brown tint my eyebrows for my wedding. was wondering what should i ask for shape wise from the person so i dont end up with super thin and scary eyebrows. what should i fix? thanks! going to grow my eyebrows out for the next 4-6 weeks and then go in