Open an image in Pixlr X.
Before you consider editing it - what is a purpose of the image in your design? Is it going to be a stand-alone image, or a background, or maybe a focal point?
Based on the intent - choose appropriate settings for the image editing.
1. straighten and crop
Double check your horizontals and verticals. Unless it was your intention to angle the camera as you were taking the picture - have your horizontals horizontal and verticals vertical.
I'm not saying that you cannot have an angled image, but if it is slightly off - it creates tension because it feels like there is something wrong with it. That's something we don't want. If you want angles in your shot - exaggerate it!
So straighten the horizon line if you have it in your photo.
By cropping a photo you can remove background clutter and focus the viewer's attention on the object of interest. You can also improve the composition and make the format fit your design idea.
2. adjust colors
Color correction involves adjusting the colors to make them as accurate as possible.
It's a crucial part of photo editing since your camera doesn't always capture the hues of a scene the way it should. If a blue sky turns up purple in your image, you'll need to make some adjustments to make it appear natural.
Temperature
Color temperature is the relative warmth or coolness of light.
If you have taken a photo that looks orange or blue, the temperature needs adjusting.
In photography, the terms color temperature and white balance are often interchangeable. Our goal is to adjust the colors so that the whites are not tinted.
saturation
Color saturation is the intensity of the colors in an image.
Higher the setting - brighter and more vivid the colors are.
Lower the number - less colors you see in your image. Eventually all color information can be removed, leaving just the values. All you will see is a black-and-white photo.