Power Automate PDF Upload API

I need a Power Automate Desktop flow that takes a PDF stored on my local computer, calls a specified REST endpoint, and uploads the file successfully as a document. The API expects a standard multipart/form-data (or an alternative JSON base64 body if that is easier to implement), and should return the usual success code so I can log or display confirmation inside the flow.

The flow must:
• Prompt me—or watch a folder—for the PDF, read it from disk, and attach it to the request body in the correct format.
• Handle any required headers, tokens, or key-value parameters the endpoint needs; I will supply the actual URL and credentials at build time.
• Capture the API response, flag any errors, and write the status to a log file or simple Excel sheet for traceability.

Please deliver the finished .pad file and a brief text guide explaining where to insert my endpoint, tokens, and any proxy settings. A quick screen recording or screenshots of the successful test run would be appreciated so I can reproduce the setup without surprises.