Guys,what makes a girl a good kisser?

three main things

all of them deal with knowing where to add things and where not to

hands and tongue and teeth

first hands need to go behind the head somewhere just so you let him know you want him kissing you and you're not just letting him do it

second tongue needs to explore his mouth and it's almost a fun little battle between your two tongues to see which ones gets the other mouth

and same with the teeth

you don't want to bump them but you do want to nibble around on his lips and maybe some on the tongue

it's all in what you like