asatru what are you saying? is English your second language, you lack written skills, or just make stuff up because your post once again confuses me. you are correct that black candles are not 'evil', and that they can be used to cleanse [in Wicca anyway a black candle can be used to represent the God] unfortunately, you lost me at the last sentence. i think a know what you mean by the dolls, how voodoo dolls and poppets aren't evil, and they can be used for healing, but what's the point about cartoons?
i don't know the spell in question Mary, but you don't have to worry [look into colour association] when casting the spell, charge positive energy, and visualise your desired intent and it'll be fine. most spells also tell you to leave the candle to burn out. once the spell is done, if the spell doesn't say what to do with the wax, you could melt it down and reuse it, bury it [if you're trying to send something away from you it should be buried off property] trow the wax in a bonfire, or toss it in running water [some people just throw the wax away. whatever you feel it best]