This is what I began with. I did add some layering to this, but it has not come out or I can't see it in the photo below. But I at least got to use the gradient, and it came out as the picture below. Not to worry, I will have another go later.
I have started reading the file that Ruth told me about, but haven't got to the part on how to change the tools or brushes. They keep coming back. I have a feeling I could need to be holding down a key or something.