Photo Editing 1 - Rainbow effect

1. Create a new document with as 1000 *1000 px dimensions and copy and paste a photo with the same dimensions.
2. Create a new layer . Go to gradient ->special effects and select russels rainbow built in rainbow gradient.
3. Drag out a radial gradient from the bottom end of the canvas to where you want the rainbow to end.
4. Change the blend mode to screen. Go to filter->blur->gaussian blur and select 50px radius and change the opacity of the layer to 50%.
5. Click on the layer mask and select black to white linear gradient and drag out the gradient from bottom of the arc where the rainbow is to end to the top of the canvas.