Yes, you can create a logo and a tagline within just a few days. But a brand is a lot more than simply a cool logo and a snappy tagline.
And, no, you can’t build a brand within just a few days, a few weeks or a few months even.
Your brand will grow and develop through a combination of your own efforts, and the ways in which your customers see and respond to you. You brand is as much a function of customer reaction as it is a creation of your own making.
For example, if you sell a great product, but your customer service is horrible, that horrible customer service will become part of your brand.
You take the first step in creating your brand through design and writing. After that, once it’s out there in the wild, your brand will evolve. It will get some support from some customers, and take some hits from others. Your job is to both develop your brand, and to protect it.