Meet (Kiss) Advice plzzz?

hii guys my name is niamh and im 13(nearly 14) and you see im afraid to meet(French kiss * a boy i no all the tongue bi but im just afraid of the going in for the kiss part because im like what do i do and do i open my lips and close my eyes or do i open my eyes and close my mouth and open it when i touch his...It just when im standing next to a boy getting ready to meet him i gett really nervous my heart starts pounding and i feel sick and get a headache and im pressured into doing it cuz my friend pushes me on top of him and well its embaring and im afraid of my life and i have to meet(kiss) aboy before im 14 and please dont say it comes naturally because if it did i wud of dun it already so im begging you all plzzz help me before im mocked PLZ xxxxxx