Steps:

1. edited curves to make it darker

2. edited brightness/contrast to make it darker

3. sharpen tool on the green beads 

4. green overlay layer on the green beads at 50% opacity

5. duplicate all three layers; merge. set filter of the duplicated layer to multiply at 50% opacity

Steps:

1. blue gradient from left to right on a color burn layer

2. yellow gradient from right to left on a multiply layer

3. duplicate all three layers; merge. apply motion blur filter to duplicated layer and erase a circle in the centre with an airbrush

4. blue overlay layer over the blue nail polish

Steps:

1. create an overlay layer with an orange gradient in the bottom and blue at the top

2. edited curves to make it a bit darker 

3. edited levels to make it darker (middle slider)

4. sharpen tool on the tip of the red tie