Ok, some tips:
1) Instead of "I wanna make something nice for "A Song of Ice..." Tell folks exactly what you wish to make or need them to make, as in: a) I need a bazaar, or
I will make a specific tile group etc. Without details, you are not going to get much help.
2) A "Project" here on the Bioware forums is nearly a waste of time. Few (none that I have ever seen) ever have comments/discussions, and few if any have any files. Projects here can't be found without specific searches, and most folks simply will not bother to search for hidden projects. So, to solve that, just post your thread as you have done, but give folks some details on exactly what you need or think is missing from NWN that someone might be willing to help create.
I have read the Series by George R.R. Martin on this, in fact, I am currently Re-reading it and I have read dozens of OTHER books/story-lines as well. Meaning, I have absolutely no idea what you might need to make your module work.
If you can find pictures of the specifics that you want, folks might be able to help you create it, if what you need requires special creatures, give some details and maybe a custom content author might get interested. However, it seems like you are asking for a team of folks to help you create a custom module with all required tilesets, creatures, scripting etc, and for that you may need to post in the Guilds and Registry "Ye olde Tavern" Threads, or the Dungeon Masters threads. I have not seen too many folks attempting to start a project here in CC land as here we are mostly dedicated to specific ideas/requests, and creating everything described in a dozen book series by an author that uses a thousand words to describe a tree, is sorta over kill.
I love George R. R. Martins' books, and the series "A Song of Ice and Fire" but there is a huge amount of details in those books, and thus a huge amount of custom content requests buried within. You MUST get more specific to get real help here.