"Colour cast. All images have a colour cast otherwise know as WHITE BALANCE, this is the HUE of the white areas. Also know as the colour temperature of an image. Be careful to adjust the colour cast of montaged images so that the white areas look the same, doing otherwise will render your images unreal and undesirable." Choosing the right color is sometime so hard. i think you need to have a natural feeling about what and where are going to be placed. with time you will get the hang of it but it does need some serious practice
I' ve been practicing photoshop because it is wonderful program which allows us to edit photos in many ways. It gives us detailed tools for editing and definitely I am still unaware of few things you have shared about this software. Thank you for sharing these tips.