How do I go about starting a business?

I'm 13, and I'm saving up for a horse, so I'm looking to start either an iPhone cover making business or a headcollar customising business. My parents can't help, they have no experience in this field. How do I go about starting a business? I have start off money, yes, and I am researching item... show more I'm 13, and I'm saving up for a horse, so I'm looking to start either an iPhone cover making business or a headcollar customising business. My parents can't help, they have no experience in this field. How do I go about starting a business? I have start off money, yes, and I am researching item costs and planning what prices they'll be etc, but how do I start off? Make a website and hope for the best? Sell a few on eBay and then gradually start making more and possibly opening an eBay shop? I really want to do this, so any help would be appreciated.
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