
This entry is short tut for editing image by PSP (photoshop).
1. Choose an image like this one

2. If this image is too dark, u can adjust the contrast following these steps
Image-->Adjustments-->Brightness/Contrast. Another way, duplicate layer image and change
Bleding Mode to Screen. After that u will have

3. To make a rainbow, create a new layer with name RainBow then use
Rectangular Marquee Tool to make a rectangular area. Next, choose
Gradient Tool, change it to
Transparent Rainbow then drap a straight line from top to bottom

4. Remember, this Rainbow at a new layer with name RainBow if not u cant fix the rainbow as u want. Now, we have a rainbow like this image above. Now, we fix the straight rainbow as real one by using short key
Ctrl+T and then we choose the
Switch between free transform and wrap modes to make curve rainbow. After that, we adjust
the opacity to 12%

p/s: If the rainbow is too big u apple the mask for layer RainBow and use the brush tool (blur brush) and delete in the mask