Please design your own photo to honor the first, second, and third prizes

Please design your own photo to honor the first, second, and third prizes.. On the subject of student military, The main color is green., Soldier, hills and mountains. We are going to the military for a month., and organize a contest, then I need you to design a certificate photo for me. Keep it simple, just like the illustration, but not in detail, To make a certificate Just do it like Canva