How do I add a script to the Service menu? See "How do I automate this repetitive task?" I'm posting here so I can show some screenshots of the work in progress. I'm very new to both StackExchange and also Automator. Don't yet know my way around and am stuck. 

I'm told to create it as a Service. I start a new Automator file and choose the "Service" option. 





Save and close the file using the name "ConvertTiffForOCR.workflow. I reopen the file and am given the option of installing it in the Services menu. I say yes to the install.

I go to the Finder's Services menu, choose my new script and nothing happens. No error messages.
While bash is cool, doesn't the image manipulation module in Automator accomplish what you are trying to achieve?

Instead of your last stage in the Automator workflow add the Photo Format module twice ( Automator Library>Photos>Change Type Of Images), the only option is target image type, where you'd presumably select jpeg for the first one and then tiff for the second one. 

This article in MacObserver explains how to use the module in general.