An excellent logo designer has a visually creative thinking. We know that some logos are very clear and obvious and some are more conceptual. The designer works things out and provides the best output to the audience. Though there are several design options (abstract, type only, illustrative, etc.), the designer has to be open-minded to deliver the best logo for the customer and his company.
Using your own way of design is excellent, but it should enhance the product and not surpass it.
A designer has to be good in conveying concepts easily and clearly, and can discover several alternatives for the same issue.
Among the best logo designers are those who can do their graphics with precision, great rendering and can craft perfectly.
In addition, an excellent logo designer has to be well-versed with different font types. Choosing the right font is very important as it can make or break a logo. If the font is not quite good, then the designer should know how to make the font right.
Nowadays, there are so many identical companies and business designs, making it very challenging to achieve a distinction. Moreover, it makes it tougher to make a truly unique logo.