Advice - new SB and SD

I am a 24y/o female from Europe.

I have been doing some light sex work because I experienced a financial crisis. Only one on one camming and it has been great.

Through this, I have met a guy, who after chatting with him for a bit, said he gets turned on by the thought of spoiling a hot young woman. He is a 41y/o lawyer, probably high ranking based on some of the information I got from him.

He sent me 100€ randomly, "just so I know I'm not wasting my time", without actually expecting a cam session out of it, (for context-I was charging 50€ for ~15min cam session) and another 100€ a few days later, to have fun at a party. So I think he is legit. He has also talked about taking me shopping or on vacations in Greece etc. We have also set a time for me to go buy myself some clothes and him sending me the money, he was excited when I brought up the idea to him.

The part I need help with; I think we are both new to this type of arrangement. I don't know how to go about getting money from this guy reliably, not only trips and clothes. How would you approach this?