First why you need to create a new coin? There are a lot of coins already that are existing and did you know that many of them are slowly dying? Probably that can happen to your coin and its obvious that you don't know anything with it much better to invest your project with bitcoin based payment and not with an alt coin.
Agreed. The "why" question is probably the most important one. At the end of the day, what problems are you trying to solve? What values are you adding to users?There are a lot of newbies that are very curious on how to create one. Well they should make their own agenda and road map on what will be their reason on creating one of it. Because most of the alt coins that became popular had their very own reason. If your reason is just going to earn some bucks then you don't have any chance to excel your coin.
I'd suggest forget about starting a new coin since you don't know what you are doing obviously.