Luckily, you're on Xbox and have settings enabled that others can view your stuff (PS users have a MUCH harder time sharing their stuff because of the share options on PS), so the simplest and easiest way would be to go here: https://xboxdvr.com/gamer/blue-rage0/screenshots (there's other websites that let you access your clips and screenshots, too, but that's one of the ones I personally use). Open up the relevant screen shot and select to copy the location for it, and paste that into your post.