Step 2
Layers > New Raster Layer... > Ok
On the Materials palette, set your Foreground color to #279de5 and your Background color to #12499c
On the Materials palette, click on the Foreground color and select the Gradient tab.
Click on the image to open the available gradients.
Select Foreground-background and use the following settings:

On the Tools toolbar, select the Flood Fill Tool (F) and fill the selection
Selections > Select None
You now have a pretty blue image similar to this:

Now let's have some fun with it.
On the Tools toolbar, select the Selection Tool(S) 
On the Tool Options palette, Selection type: Rounded Square
So you have a better understanding of what we're trying to accomplish here, this would be a good time for a quick note. The idea with any of these shapes is to split them in two pieces. That's pieces, not two half's. It'll make perfect sense once we continue, but with this in mind, for this particular pattern (or shape), I know just by looking at it that the Rounded Square selection will work the best. It has a round corner, and the image itself looks to be perfectly square. The selection type that you may end up choosing is going to depend on the Preset Shape being modified. You may even have to hand create the selection by using the Freehand Selection from the Tools toolbar, and Point to Point on the Tool Options palette. You'll get the idea easy enough. Let's continue.
Create a Rounded Selection towards the center of your image:

What we want to do now is line up the selection with our image. First, we'll put the selection into edit mode.
Selections > Edit Selection
You'll notice that the selection is now a salmon color indicating that we are in edit mode:

On the Tools toolbar, select the Pick Tool(P) 
Now our edited selection has a box around it with several smaller square boxes (called nodes):

Grabbing it from the center node, I'm going to line up one of the rounded corners of the selection, with the rounded corner on the image:

I'll start by lining it up fairly close:

Remember, the idea here is that we're going to split this image in half. What I recommend doing is to start from one corner (in this case the point on one of the arrow tips) and move the edge of the selection until it lines with the edge of the arrow tip:

There's a very good chance that it doesn't line up on the other side:
So, grab the node from the side that is off, and either bring it inwards, or outwards until it lines up:
It may take a some maneuvering to get it lined up on the edges and you may even need to rotate the selection slightly so as to keep it centered in the image. Once you get the hang of it, it's fast and simple.
Okay, assuming everything went well and you have it all lined up so that it looks like you have half of the image covered up, let's take the selection out of edit mode.
Selections > Edit Selection
Here's a tricky part.
Selections > Invert

Now, very carefully click on the upper portion of your image with your mouse. Your image should now look similar to this:

If you glance over at the Layers palette, you'll notice that the upper portion of the image is now floating above the current Raster 1 layer:

Let's place it back down on the layer.
Selections > Defloat
Selections > Load/Save Selection > Save Selection To Alpha Channel... > Save
Don't de-select yet!
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