So, i just started my first job. I'm 18 and this is a summer job wich might extend in a part time during the year. In my training class, there's a 23 yo girl, really cute and sweet. She doesn't really know my age plus i look a bit older, but definitely no more than 20. We talk during breaks and i make her laugh, but i have no idea what to do further giving that we're at work and i have no idea how people flirt there, plus she is older and i have no experience in hitting on older chicks because i get the feeling that i look stupid like "look at this little kid trying to flirt with me", "so adorable, yet so pathetic". What should i do? What are the key things in this?