I have an image with a woman, and I need to make an ad (size 260mmx125mm). I want to put the woman to the left side, but then right side becomes empty. So, how I should solve the problem? I have picked the color from image, but it is definitely different than in the actual picture.
Should I use the Clone Stamp Tool in Photoshop, or there is a better way to do this?
By the way, it will be used in print, so I need a good quality.
A professional technique is to simply add a layer mask with a gradient on one side to soften the edge and duplicate the color or texture on a layer below it. See screenshot of layers below.
It's especially useful if you don't have much texture to copy from or when you need to expand a big part of the background. You can use this technique to duplicate small parts of texture and merge them together without any seam. It's recommended to avoid distorting pixels when possible, especially for print projects since printing often amplifies these distortions.
This way, the image will:
Can be used with textured backgrounds
Can be used for any length/width background without pixel distortion
Edit > Transform > Flip Horizontal
Edit > Free Transformand stretch the copy to fill the extra area.
I selected a bit too much background and got more of the glow than I'd really want. If I made the marquee selection thinner and tried to avoid that glow, the end results would be better.
Photoshop will interpolate the stretched pixels so they appear high quality (and won't appear as "stretched" in most cases). However, be aware, this technique only works when the background is primarily a solid color - it won't work well with busy or patterned backgrounds.