Website Payment Guide Creation

I need a clear, step-by-step written guide that walks my users through every action involved in making payments or placing orders inside our web app. The document should begin the moment a user decides to check out and finish with the on-screen confirmation that their order is complete... (Budget: ₹750 - ₹1250 INR, Jobs: Content Writing, Document Checking, Graphic Design, HTML, PHP, Technical Writing, User Experience Research, Website Design)