Add Simple Description Graphics to 6 Images

I have created an iphone/ipad app and need finalized screenshots for the app store. I have 6 total images (3 iphone and 3 ipad), and I need some text overlaid on top of the images, so an app store customer understands what the screenshot means. I have attached a wireframe of what i am looking for. Please use colors which are subtle and are visually pleasing. Text for photo 1: Step 1: Choose any photo from your camera roll or albums. Text for photo 2: Step 2: The photo will appear just like the regular camera app. Text for photo 3: Step 3: Hand your phone to a friend to view the photo. They can zoom in, but can't swipe to other photos in your camera roll!! - The images for ipad are very similar to iphone, just larger. - I will need the original .psd's which are made and .png's. - I expect this should take between 1 to 2 hours