In this particular photo, I’m trying to have the sky take up most of the photo since I know we will be adding in a beautiful rainbow. When you crop, make sure to apply the rule of thirds for maximum visual appeal. This ensures that none of it will get cut off by Instagram. The first step in editing this photo, which I already know is going to be for Instagram, is to crop it at an 8 x 10 ratio. In Lightroom Step 1: Crop Your Photo 8×10 Ratio