If you want to get help with post-processing on an image of yours: Sign up as a Silver member or higher.
After you have signed up, go to the "NEF Processing Skills Forum"
(1) Click the top right button "Post new message" in the forum
(2) Include a brief description of your image and what you want to achieve
(3) Attach the NEF file using the "Attachment" function in the post message form. Depending on the size of the file and your Internet connection speed, you may need to wait a minute or longer until the file has been uploaded. Once uploaded correctly, a small thumbnail of your image is shown.
(4) Click the "Post message" button - that's it!
Here is a short video wrapping up the steps 1 through 4
Please note: As of 08-APR-2018, the latest Safari browser, Version 11.1, cannot be used for uploading NEF files in the forums. Please use Firefox, Chrome or another browser for uploading instead.