Step 1
Open up a new image document in Gimp 800×600 and save these pictures: 1, 2, and 3. Open up all the pictures of Selena too.

Step 2
Take the first picture and copy it by pressing Ctrl-C and go to the blank image and paste it by going to Edit >> Paste As >> New Layer. Now using the Move tool (M) move it to the left.

Step 3
Take the second picture, copy it and paste it and move it to the right.

Step 4
Take the third picture, copy it and paste it into the middle.

Step 5
Now using the Eraser tool erase the circled parts of the blend until it looks like mine:

Step 6
Now go to Layer >> Merge Down until all your layers are one.

Step 7
Go to Colors >> Brightness-Contrast and set your settings as mine:

Step 8
Go to Image >> Duplicate.

Step 9
Go to Color >> Color Balance and set your settings as mine:
Shadows: -10, -11, 17
Midtones: -23, -13, 14
Highlights: 4, -12, -27

Step 10
Copy that image and go back to the original image and paste it as a new layer. It may be off centered so move it into place. Set the Layer Mode to Overlay.

Step 11
Using the Selection tool make a selection like mine:

Step 12
Go to Layer >> Merge Down.

Step 13
Press Ctrl-C to copy it.

Step 11
Go to File >> New and make a new image sized 950×700. Fill it with 7b2625.

Step 12
Paste the image by going to Edit >> Paste As >> New Layer.

Step 13
Using the move tool, move the image into the center.

Step 14
Now using the selection tool, make a selection like mine:

Step 15
Using the Fill tool, fill in the selection with white. When you make your selection and press a new tool, the selection will go away but is still there so fill in where you selected. See settings:

Step 16
Add text and effects and you’re done!

My Result