Raider's football cake

Not a fan at all, but I do love cake. You know, I'm like the fat kid that loves cake...any kind as long as it's CAKE. With the exception that I really am fat and can't live without cake. True confession. lol I made this cake for my sister's cousin-in-law. He's a true die hard Raider fan. I mean from having your whole master bedroom decorated in black and grey and queen bedspread is even Raiders. That's awful. Well football cake is covered in fondant and made it look as if it's on grass (butter cream). That's it nothing special.....can you tell? No secret tips.