The people of PsdTuts offers an interesting article (in English) that shows nine important principles for creating a successful design. There are several factors to consider, but the list looks the most interesting is why quedeberían happen to him.

1 – Precedence (to guide the eye): One of the most important. Make the reader look at where we want. A simple example is that when we go to a website the first thing we see in general is the logo.

2 – Area: To think that space is lost is rather a mistake. The space often makes everything look tidy and clear and therefore more attractive.

3 – Navigation: Plan well to which the reader can go through the navigation menu, where to locate, and other details to be taken to fulfill its task.

4 – Design to build: When we created the design in Photoshop is very important to take into account things like whether it is possible to create code, what happens in other resolutions, etc..

5 – Tipography: The choice of words, their size, space, color, etc..

6 – Usability: Make the site easily accessible to our readers, think about where to locate the elements in mind will react to something is important if you feel comfortable and complete.

7 – Alignment: The ideal is to not mix different types of orientation in order to maintain a consistent design.

8 – Clarity: You must pay attention and that our images are not pixelated, the sources are well defined, and so on.

9 – Consistency: That all combines. Fonts, colors, formats. Everything is better when it is within a ordenasí why not get it.