You will need to create graphics for your scratch-off contest outside of PeopleVine:
Intro graphic: 1000 wide by 500 pixels high (example)
Initial scratch-off graphic: 960 wide x 540 pixels high (example)
Prize graphics: 960 wide x 540 pixels high. Note that you must include a graphic for each individual prize you want revealed. (example)
See our scratch-off demo for a full example.