Next we're going to put some clouds into our picture, start by selecting the eyedropper tool then pick a color from part of your render, you should now have a bright pinky color as your foreground color. Create a new layer, now select the brush tool then go into your clouds brush pack and choose a cloud brush. Now place your cloud somewhere over the girl then use the same masking technique we used for the line and for the renders but for this we want most of the cloud in front of her. Below I've shown what it should look like after you've added one cloud and masked it.