Learn how to make your indoor flash photos appear more flattering and natural
Select the Curves adjustment from the ‘Create New Fill or Adjustment Layer’ icon at the bottom of the Layers palette. Add two anchor points around one square in at either end of the diagonal line.
Drag the top anchor point to the left in order to brighten the image and then do the same with the anchor at the bottom. Ignore the results for now, as you really only want to brighten the background here.
To remove the effect from your foreground subject, select the blank layer mask in the Layers palette. Pick the Brush tool and ensure you have a large-sized brush with a soft edge.
Set brush Opacity to 80% and ensure your subject to remove the Curves effect. If you go over the background, change the brush colour to white and paint over to bring it back.
Remove the cold blue tones with a Photo Filter adjustment layer. In the dialog box, select Preserve Luminosity and choose the Warming Filter from the drop- down menu. Increase the Density slider slowly.
Flatten the layers via Layer>Flatten image and select the Dodge tool. Select Shadows in the Range and keep Exposure around 10%. You can now lighten dark shadows by painting over them.