Text reveal using animated mask

Is there a tutorial or some guidence on how to do the following. I am in Expert mode. 

I have a sprinkler that is moving right to left.
I want to have text that is written on a curve. I need to know how to shape that text in order to appear correctly

The end result I also need help with. I want to reveal the text as the water goes across the screen. How do I accomplish this in Premiere Elements.

I'm a former video editor, but mostly from the linear days of old. I understand the methods and cocepts. Just not the new stuff in the software like this.

Thanks in advance for your help.