Lets start by clicking on File/New/New Image. We need a 330 x 330; white; RGB canvas, so be sure that you have the same settings as I have here before clicking on OK.

For the image that we're planning on creating here, it's best to have not only PI open fully, but your canvas open fully too. That can be done by clicking on the little maximise square in the top right hand corner of the canvas you're working on.

Click on the Path Drawing Tool and be sure that you have selected the shape Freedraw and the mode 2D. (At this stage, the colour doesn't really matter because we're going to change that very soon.)

In the Path Panel box that pops open, click on the Shape tab and then be sure that you change the accuracy to 10 and check the Close Smoothly box.

Then click on the Options tab and be sure that Anti-Aliasing is checked. With everything set, the Path Panel box is no longer needed, so click on the cross in the top right hand corner of the Path Panel box to get rid of it.

Here is where the fun begins because we're going to start drawing in a few basic shapes but accuracy won't matter so don't think you have to be a great artist to do it.

Start just outside the top left hand corner of your canvas and whilst holding down your left mouse button draw as you can see I have done here (you don't need to go too far down the canvas). When you get back to the beginning, let go of the mouse button and the area you drew will fill with colour. This part will eventually be the sky.

Now we have our basic landscaped image we can start filling it in.

We'll start by selecting what will be the sky at the top of the image. Just click on that area and you will see little lines going around it so you know that area has been selected. Click on Edit/Fill and you will see a Fill box pop up. Click on the Texture tab. Be sure that you are viewing the Natural Texture Fill Gallery and find the fill NT57 (or NT63 for PI8 users). Double click on it to fill the sky area.

Because we're now working with an image rather than a path shape, the quick colour commands will work. So if you decide that the green you chose wasn't quite to your liking, you may want to have a little click about on them until you're happy.

Let's move on and select the next set of rolling hills. This time we will fill as we did with the sky but instead of choosing a natural texture, we'll choose a magic texture. So just as you did before, click on Edit/Fill (no need to convert this section to an image first). Select the Texture tab and alter the lowest drop down box to Magic Texture. I chose to use the fill MT74 but you're welcome to find another one you might prefer. The one thing you need to remember is that the closer the hills are to you, the lighter they need to be.