Grindafane

Hi! I am very new to modding but I made a sword and shaded it in blender and now i want to put that sword into Skyrim, how do I go about this? I have gotten the model of the sword into nifskope and i am pretty sure i can figure that out the rest of the way I've found enough guides on that, but i have absolutely no clue how to make the dds textures. Is there a way to export the shading that i've already done in blender to a dds format? Im guessing not but that would be awesome! If not, How do i make the texture? and what platform should i use?