For this photo I used "Value" to make the color stronger, I also used "Shadows and Higlight" to make the background darker so the flower could stand out.

This photo of the Norskies: Tonje and Ida, I used "Portrait mode" on Tonjes phone when I took this portrait, so the background would be blurred, and the focus were going to Tonje and Ida. I also used "value" and " Brightness" on Gimp to make the color of the photo more visible.

For this picture I used value and brightness to make the colors darker and the movement in the leafs more visible.

For this picture I only used "levels" and "contrast" to make the colors in the image stronger.