What to do with my eyebrows ?

im 14 years old and my mum wont let my near a pair of tweezers. all my friends have nicely shaped eyebrows but i dont really :/ i can see hair in the middle of the two when i look closely in the mirror. its not obvious when you first look at me but i dont like knowing theres hair there. i like my eyebrow shape its just the hair in the middle. how can i not hurt myself tweezing (for the first time) and my mum not knowing ? i have NO idea how to tweeze :/