Help

[#1]

Good evening, I'm new to upwork, and I have a few concerns. indeed for already 3 I had an interview with a client, he asks me to make sets of images and that a set costs 3$, I first made 1 set but he does not always want me send an offer, is it normal that I work without an offer?

Please help me 

[#2]

Are you seriously asking if it's okay to work without a contract? Dude, the Academy tab is right there. Learn how to use the platform before applying for jobs.