I want a nose job but what if ...?

it turns out wrong? ok so like my nose is not like a bird or anything its like round! its like at the tip round not pointy and i dont know i just feel self conscious cuz' my mom and my sis have this little pointy perfect nose and i just don't :( its like soo soo different from their's and they joke like ohh u have a lilo nose (from lilo and stitch) and i mean i don't have it like that! its not wide at all its just the tip is round! and i dont have any bumps or anything so my nose doesnt look aweful or anything and they keep on saying ohhh its like a clowns nose! and i know they r joking but like they are talking/joking about a part of my body that is in my FACE! like i cant hide it! and it makes me feel bad :'( soo sorry about the story...so like what if i get a nose job and like the new nose doesnt match my face or i end up with a michael jackson nose (R.I.P) or something worst ! so what is ur advice ?thanks in advanced