Kissing my girlfriend please help?! idk if i mesed it up for her?!?

im 14,ok so i really like my girlfriend, we ride the bus to school and back home, i walk her home, we see eachother between cles, so we spend alot of time together. we both never kissed anybody and i walked her home ( we live just donw the street from echother) and i kissed her, but it was like half a sec. and idk if she wanted her first kiss to be better than that? so now we kiss echother when we say goodbye and stuff, but i want to kiss her more, i love kissing her, like is it alright if i kiss her in the halls between cles? i just dont know when is the right time to kiss her, like jsut randomly, shud i kiss her outside at recess, also idk how to like just move close and kiss her ( im not an expert) or when ever we hug good bye, i just dnt know. also how do i kiss her longer and more pasionate? srry that its long, but if anybody can answer me it wud be really great and it wud help alot!