What are the requirements for creating a brand name and logo?

You have to check no other brands have the same name or image as yours and a registered trademark. The trademark for your brand must be in the form of a text-based mark (word mark) or an image-based mark with words, letters, or numbers (design mark). Depending on where your trademark is registered, eligible trademarks can have different classifications based on their issuing trademark office.

First and foremost is that you make sure your brand name is unique to you and no one else is using it, then you can make whatever style of logo you prefer simple is that.