You know Google, right? http://andarazoroflove.org/how-to-create-alt-coin-scrypt-clones-for-fun-and-profit-bitcoin-litecoin-secrets-exposed/
First thing that popped up, alon with several other tutorials, but just changing the basic parameters, won't make your coin uniqe.

If you really want your coin to establish, I'd say, you give at least an announcment several weeks ahead, where you already state your uniq features in a whitepaper. Nothing should be premined and as many people as possible should start with the same conditions. The coins should not all be mined within a timeframe of less than 3-4years, even that seems pretty fast. Don't expect your coin to "make it" (overtake bitcoin) in less than 5 years, it took btc 5 years to be where it is now.
Even IF your coin is superior, this is still the crypto market...it's unpredictable.

But a successful visionary, we all know, once said: “The People Who Are Crazy Enough to Think They Can Change the World, Are the Ones Who Do.”