The current solution with copying of the images is not final yet, however, you can do the following to create custom images per game:
1. Copy the existing images of the SDK to a temp folder like “gamenetwork-graphics-vplay” and then replace them with your custom one. Make sure to also copy your images to a temp folder like “gamenetwork-graphics-myGameName” as they get overwritten when you update the SDK.
2. Your images are then copied to your project output folder. I would advise to disable the “shadow build”, because then your images get copied right into the qml folder. They are needed there if you want to deploy it with the build server like described here.
For further customizations, at the moment the best resources are the source code of VPlayGameNetworkView, LeaderboardView (with its leaderboard delegates) and AchievementView (with its achievement delegates). You can find these sources in this folder: V-PlaySDK\Desktop\V-PlaySDK\daily\qml\VPlay\gamenetwork\gnView