I have 2 problems about showing results by tag.

First, the results are showed in one column. How can we manage to show them in two columns?

Second, in the results the item which supposed to be featured doesn't have the additional icon on the title. How can we manage to show it?

Hi. The default layout for tag listings does not support columns or featured flag. You will have to create a template override and implement it on your own. You can learn more regarding K2 templates at getk2.org/documentation/tutorials/174-templating-with-k2-and-the-concepts-of-sub-templates .