Hi !

Iam now just 90 skill for smithing and wanted to build deadric armor and weapons.

What do I need to do so and where can I find what is needed ?

Thanks for your help

Don't do it man. It will kill your mood to keep playing that character.

if you don't want to just sit at the forge/grindstone/bench and see what the games says: http://www.uesp.net/wiki/Skyrim:Smithing

If you are at 90 skill then you can get the perk to make daedric weapons and armor. You need ebony bars and daedra hearts (1 per item). Daedra hearts are the hardest item to find early on (at least in my experience), they can be sold by NPCs who sell alchemy indredients. And can drop of the odd daedra and human. I actually took the dragon armor perk as I had the mats for a full set long before I saw a daedra heart.

There are some quest lines that always drop daedra hearts if you search google.

If you do the quests at Azura's Shrine and Dawnstar Museum (lvl 20 required), you'll have 7 hearts if you loot the dremoras. The ones at the final location of the Museum questline will even respawn after a bit. You can also steal a heart in the basemant of Jorrvaskr.
Otherwise, visit a lot of alchemists.