US tax refund filing. I missed filing w8ben form before december 2015 with my brokerage. So I have to file 1040nr(I suppose). There was a tax withholding in 1099 for which I need to file refund. On checking 1040nr, it appears straightforward(2 entries) but I need someone who has done refund filing before to review this document and guide me with anything extra that is required. Also I would like someone to help review w7 form(that I would fill) for itin application.
This is pretty straightforward task for someone who has done this before.