Instructions on how to use this Avi Background on your IMVU Mobile Profile - Step 1 Save Outfit with Avi Background on. Step 2 Go to your Mobile Profile by ticking your profile pic at top Right and then tick on "EDIT" at top Right. Step 3 Tick on "Change Profile Look" and choose the saved look with the Avi Background on and then tick SAVE".
Image from Gyazo
https://gyazo.com/2f12f00174eb29182407b10efcc91bdb