[@Sebastian D] Better asked in [url=https://www.roleplayerguild.com/forums/9-suggestions-problems]this section[/url], but this [url=https://www.deviantart.com/captainedwardteague/art/Red-X-from-Teen-Titans-818359885]person has already done something like that.[/url] 

If you ever want to do it yourself, I would suggest is finding a better quality copy of it saved as .PNG or a .GIF. .JPEG/.JPG are atrocious to edit a transparent background from, mainly because they lack transparency and are lower quality images in general.

Once you do that, I'd suggest finding a guide somewhere for one of the many image editing programs out there (personally I use GIMP since it's basically free Photoshop) or looking up a browser-based image editor online that has the ability to edit transparency.