How can i look like japanese while doing cosplay and even normally?

normally I have long dark brown hair.and normal brown eyes a little bit shaped in almond but only when i smile.and i have a big nose.. .I m 15 years old so no surgery I m lebanese but once a skin doctor told me that our mom s family first originated in japan then in turkey and I dont have whit skin neither black it s a little bit in the middle but more white and i m almost 1.67m ong and weigh 54 Kg so how can I look japanese in cosplays and real life..?and plz no not meaning answers...and thnx