Before adding the insert behavior to your page, you will want to add the File Upload behavior. Go to Insert -> WebAssist -> File Manipulation -> Upload.
To add the insert record behavior to your page, open the Server Behaviors panel (Window Server behaviors), click the plus button in the server behaviors panel and select DataAssist -> Insert -> Single record Insert.
For each of the Table Columns, click the lightning bolt next to vale and select corresponding binding from the Form Collection. For the Image column, expand the WA Uploaded Status (File Field Name) and select the Server File Name binding.