I have to make a kid's cake for 10 servings and I'm not sure if I should use an 8" or 10" round? It's a basic chocolate cake with vanilla buttercream frosting and pikachu design on top. Not sure how much I should charge for the 8"? If 8", should I make 2?

The reason why I'm a little nervous and doubting myself is, this could potentially lead me to more clients.

Thanks.

A double-layer 8" round easily serves 15, and kids tend not to eat very much cake anyway, so an 8" should be more than enough.

Your local market determines how much you can charge - call around to other custom bakeries and ask their price per serving for single-tiered cakes. Also, make sure an add up your ingredient and supply costs so you know how much you are spending. More thoughts here.

Thanks...

Yes.. a 10" round will serve 30 and is a lot bigger than you think it is. I price an 8" at 20 servings.. you'll be fine with an 8".

I just peeked at your lovely pics, and noticed your cakes aren't very tall. The servings you were quoted were for a 4" tall cake.
Do you have links to any cake charts?