What do you think of a 15 year old girl getting eyelash extentions?

hi i am a 15 yr old girl who wants to get eyelash extentions my lashes arnt that short but they arnt that long eitheir but i would love them longer so i am thinking about extentions is that a good idea or is it a bad one i dotn want to ruin my normal lashes or anything i want to have beutiful and healthy lashes how can i fix this? can u gusy tell me how they will do the extenstions like the steps i just need help on figureing out if its good or not and how they put them on thanks so much for reading :)