What are some important things to keep in mind when creating a Marketplace?

I am working on a project where I have partners who provide services and customers who use those services by paying some amount. I am using Stripe for processing payments. What are some common mistakes that people do while implementing this?

Are you using Stripe Connect or just Stripe? Former is basically build for marketplaces where you charge from your account and transfer Sellers' share to their stripe account after deducting your fees.

Yes, I am thinking of using Stripe Connect. I haven't integrated it yet. But, will use that soon