Is it possible to custom the image in Allure report?

I am trying to test an app, and when something goes wrong, it will snapshot, and record the click position. When generating the report, I hope that the report can show the click position (like a circle attached to the pitcher). Now the question is:

1. How to record additional information(like click position) when the test is running(use pytest)? I found an allure.dynamic.label function, is that a solution?

2. How to change the pitcher at report generating?