On the main page in the top right corner, click on the camera icon with a plus sign on it, this is the button for creating/uploading videos
From the drop-down menu, click “upload video”
Either drag the exported video file from it’s location onto the “Select files to upload” portion of the screen, or click the arrow icon and select the video file from the location
After this the upload page will appear, give the video a title, put in a description, but leave the tags and everything else as is