Other sources of vectors used: http://double-rainboom.deviantart.com/art/Pony-World-P4-BG01-317013353 http://spiritofthwwolf.deviantart.com/art/MLP-Mare-in-the-Moon-Vector-205355592
There aren't really any UHD Wide screen Pony Wallpapers made by fans. Anyone may use this for a personal background. I'd also recommend getting rainmeter and using something like Visbubble to go around the planet. http://undefinist.deviantart.com/art/VisBubble-for-Rainmeter-488601501
If you're on a 3440x1440 display like I am, you'll want the Settings.inc file to be something like
——————- ; The size of the circle, to make it into an ellipse just give RadiusY a number Radius=420 RadiusY=#Radius# ; ; Color of shapes/lines/bars. ItemColor2 is for MultiLineExtrude ItemColor=cc33cc ItemColor2=64,255,48,255 ; ; For ShapeBubble or ShapeExtrude, you can specify your own shape image ShapeFile=circle.png ; ; Width of shapes/lines/bars ItemWidth=16 ; ; Number of shapes/lines/bars NumOfItems=126 ; ; How much to extrude line/bar/shape or max shape size for ShapeBubble VariationMax=200