Hey, im from the netherlands as well, but ill keep it in english for the other ppl on the forum here. but lets start on ur text-game..
okay,so u are about to make the biggest rookie mistake:
NEVER go for a meet up right away!
u want to get her in the right mood, and then casually ask her to meet you somewhere. do NOT ask her on a 'date', but go for a meet-up. Dont take her out for dinner or whatever, thats for boring afc's.
this is what u do:
1. send her a funny text, with only purpose to see your name in her phone and smile, for example:
"Amsterdam traffic is BRUTAL! I need a helicopter"
Or anything that fits the context.
2. depending on her reply send another statement, or low-investment question. Also use callback-humor as much as possible. If she said she was good at math when u met, and u negged her for being a nerd, text her something like "hey nerd/dork, ......". This will remind her of the day she met u and fell for u.
3. Stay out of rapport seeking questions as much as possible, just keep it playful and brief.
4. keep control of the tempo. practise will teach u that. sometimes its better to send back within 5min, sometimes 5 hours. If she texts u something weird, or a joke that could be misinterperted, take ur time. Make her check her text, to see if she typed anything weird.
5. when u go for the meet up, dont end the texting there. make sure the conversation ends on a high note (e.g. "hey btw, do u remember that guy in (club)? Didn't u think as well he looked just like (celeb/anyone she knows)?")
6. if u got her to agree to meet u up next week, keep 'pinging' her. Every few days, just send a funny statement. If she doesn't reply, ur value doesn't go down much, because u aren't asking her questions, or investment. If she does reply, u can keep her thinking about u for the rest of the day. (remember, when u are texting after 22 pm, mid-week, she will prolly go to sleep with u in her mind. this builds up a strong emotional connection. carefull, it can happen with you as well hehe).
But i guess the basic principle is:
Get her in the right emotional state, before you ask her for a meet-up.
There is a lot more, but u should google some
