you can also try open your image and then duplicate it {control j } select your brush tool and set to default colors black and white. at top of screen select clear from mode. then turn off background layer and paint on layer 1 your duplicated layer. where ever you paint will turn transparent, you can make your selection this way, set opacity to 100% and brush hardness to the way you need it then open image you want to put it into,have both images open and select the move tool and drag it into the new image.with move tool still selected you can move the image around to where ever you want it in your new image. you can make adjustments to that layer also, color, opacity,brightness, etc.
