how to create a custom tag template and to display that.

hey,
i have a video site and the genre are the tags, like action, drama and more.
i have a tag template that show the result of some tag. i mean, the videos that have the tags.
my problem is that i open new page and i called him “genres” and i want to display the tags there but with picture and some little description. so i need to create some custom tag template (even if i need to add the images and the description Separately for each tag name.
how can i do that?