My Custom Steam Background for RDR2 : r/reddeadredemption

Does anyone know how to set the image for THIS view for non-Steam games? I have set Custom Background, Custom Logo, Custom Artwork and Custom Icon but I still get the big

My Red Dead Redemption 2 themed home screen layout : r/NovaLauncher

custom steam background. : r/tf2

My Custom Steam Background for RDR2 : r/reddeadredemption

100+] Best Red Dead Redemption 2 Backgrounds

How To Change Steam Profile Background

400+] Red Dead Redemption 2 Backgrounds

Red Dead Redemption Game of the Year : Take 2 Interactive: Everything Else

Steam Community :: :: Red Dead Redemption 2

Steam Community :: Guide :: Red Profile Backgrounds

Rockstar Store, Official Store for GTA, Red Dead Redemption

PSA: you can change the logo and wallpaper on Steam so you don't have to see cheeseface and warzone : r/ModernWarfareII

when adding a non-steam game when setting a custom background how do you get the image to not be so blurry? I know it doesn't look that blurry into image but trust