Also I should warn you that this is an extremely time consuming process and you should probably get it done while it's still kind-of hot outside. Mine took me about 2 weeks to finish but you can probably cut it down to about 2-3 days. Probably more like 5 though. And one more thing, when you're done, the cake won't be edible.
Step 1: Materials
For The Cake*: 2 chocolate cake mixes. (You will have extra so you might also make Portal Cupcakes. Or you can eat the batter cause thats what I did.)
Whatever It Says You Need For The Mix
1 or 2 Nine Inch Round Cake Pans (You're making 2 cakes)
Old t-shirt or long piece of cloth (Recommended)
For The Outside Stuff: 1-2 Tubes of Loctite White Adhesive Caulk (better safe than sorry! go for 2 tubes of the stuff)
1 Big Birthday Candle (You can look at the actual picture and decide)
1 Box Chocolate Rice Crispies (I recommend the cheapest brand)
Plastic Knife (Optional)
Fake cherries (I found some in the Home section of Target)
1 Bottle of Espresso Brown Satin Finish Spray Paint (Lowes or Home Depot I think)
1 Bottle of Spray Lacquer
A Medium Size Phillips Head Screw Driver
A bunch of spare time.
1 Bottle of White Spray Primer
1 Bottle of Orange Spray paint
Scalloped Cake Base Things (Descriptive right? I got mine and Joanns and you can decide on the size. You should probably go for the medium/smaller size.)
* Alternatively you can use the polymer cake method. I didn't because I didn't see it until the day before I published this. Using the polymer cake method bypasses steps 2 and 3.