As some players are likely unaware, Neverwinter has a long and storied history when it comes to allowing screenshots; it can be a rather onerous process as the industry-standard "PrintScreen" method does not work unless you disable the UI by entering Inspect-mode via the "B" key (by default). Indeed, even attempting to paste the copied window into an image editor will merely provide you with a desktop sized black screen.
For obvious reasons, this method would render any attempt at completing the GameKit quests impossible. As such, I am providing a brief set of instructions to circumvent the issue in-game without the necessity of any third-party program.
====== 1) Open your character menu, thus prominently displaying your character and level (in addition to the indicators in the upper-left).
====== 2) Hit the tilde key (~). On a standard keyboard, this button is located in the upper-left, above the Tab and adjacent to the 1.
====== 3) Type the following, without quotation marks: "/screenshot_ui_jpg" and hit Enter. You will see the text appear in your chat box as it is typed, though the executed command itself will neither be displayed nor will any completion prompt occur.
====== 4) Check your installation directory for the image. It will be located in: "Neverwinter\Live\screenshots"
Enjoy the game and best of luck...