Here are 10 I use every day to speed up my work and get things done. Here we go: If you make a mistake or spill over the edges while painting with the Masking Brush, hold the Option key (PC: Alt-key) to switch to the Eraser brush and paint your mistake away. To see exactly where to paint, you can see the red tint overlay of your mask by pressing the letter “O” on your keyboard. To change the brush size of Lightroom’s Masking Brush, the Left Bracket key on your keyboard makes the brush size smaller; the right bracket makes it larger.To change the color of the Mask Overly from its default tint of red, press Shift-O (each time you...