Kanji are the most popular Japanese script out of 3 writing.
These characters are called "Ideographs", "Ideograms" or "Pictograms" in the world, because a Kanji Symbols, character express an idea, and represents meaning in a visual way.

To write Japanese Kanji Symbols, there are the basic rules to apply Kanji characters.
There are some aspects of stroke order which plays an important role in the overall feeling of the kanji.

For example, the kanji symbols for 'tree' is written like the following stroke order:

However, because of the increasing popularity of computers, a lot of Japanese young people, in fact, don't really care about this rule.

Since the movie called "Last Samurai" was released, Japanese kanji symbols are getting so popular, especially for design needs such as Company Logo, Jewerly and Tattoo Design.