I don't know how to upload my Voki to You Tube
Voki characters are not videos - and therefore cannot be directly uploaded to youtube.
However - if you like you can record your character from the screen, using a screen recording utility & generate a video . There are many utilities (some free) available that allow you to do that.
When you have the video file, upload it to youtube.
Hope this helps,
Kundesupport af UserEcho