As usual Brad's advice on ghost patterns is "dead on"
....can't add anything to the conversation.
As for your opaque white base coat chipping .... Createx paints are not designed for hard surfaces so they tend to be a little soft. One work around might be to let your base coat air-dry until the white color is visibly flat looking (not shining) and then use a dryer of some kind to dry (heat set) the paint. This is assuming you don't already do this.
Best solution is to use Wicked or Auto-air paints and base sealers since they are specifically designed for hard surfaces. They cost more but they do dry (cross-link) much harder and stick to plastic surfaces better.