1440x900p Riven Wallpaper? (ASKING IF THERE IS A WAY TO MAKE A 1440p VERSION)

I was in love with the Arcade Riven login screen, but I was wondering if anyone could make a 1440x900p version for my background? I noticed they have 1600x900p, so if anyone could tell me how to do it or send me a photo of it that would be greatly appreciated. Thank you! :)