Extract and put the .png files inside the "Put into F-14B kneeboard folder" into the Kneeboard folder of the Tomcat.

Below is the general Filepath. It is possible that you dont have a "F-14B" folder in your Kneeboard folder. Just make a new folder and name it exact this way --> F-14B

"Your User Name"/Saved Games/DCS.openbeta/Kneeboard/F-14B