Typically we don't grant permission for the actual logo, but creating your own fan art is usually acceptable.
If you drew the image it's ok.
If you used an official image from Stardock, it's not ok.
PS: Logo lizard was drawn by hand by me, looking at the picture, then reduced and transferred to four colors - Two green; red and yellow. - Any such picture will look like after such operations almost identical (* More so under such small size
Sounds like it's ok to upload