Here’s a very informative video on how to make your own environmentally-friendly soy candles:

If you’re looking for some handy candle-making videos, then you might want to check out these handy candle-making features from Martha Stewart, as with most crafts, she offers some useful tips and cute & elegant ideas.
This first one covers candle making and casting wax:

Here’s another from Martha Stewart on candle molds: