Wheel cake - Benji's first birthday cake! and my first time using fondant

The boy is obsessed with wheels, so I decided to make him a Tire Birthday Cake. I borrowed the fondant tools from my mother, she bought them on amazon (though they're available at target and walmart and other box stores). I bought the fondant at Walmart because that is the store that was near, but again, you can find it just about anywhere, including Amazon.
As always, I will try to answer any questions as best as I can. Have a great day!