Finally, Dovahkiin will honor his name with this new shout called Dragon Breath. It allows you to shout fireballs and a continuous fire stream, just like dragons do.
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Installation:
-Download manually/with manager.
-Install using Nexus Mod Manager.

It's a single plug-in file, so there shouldn't be any problems.ç
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Using it in game:
As I would need to create a trigger that let you learn the words, I just relied on the console, because I need to improve my modding skills in order to do that. I maybe create a quest for the words.

Anyway, open the console and type:
player.teachword: ID
Change ID for the words ID's
-The ID are:
00051961
00020E17
0002F7BD

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Bugs:
-If you know the three words (in other shouts, like Yol) you won't have to use any dragonsouls to unlock it. Otherwise, kill dragons to get souls.

-Another "Fire Breath" shout appears, but it's useless, doesn't have words, etc.

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To do list:
-Fix those bugs.
-Create a Frost version.
-Create three walls with the words