this the spell?
well the orange candle can be used for luck or attraction. the two green candles are for a lot of things, money, job, good fortune basically. some people like using three items, like three candles, three herbs, three crystals. so that might be why they're using two green and one orange, it adds up to three, and the two green will attract the wealth more than the orange will since it's used for attraction.
for the herbs, i'm going to assume you place them in the bag. that's what i normally do when i'm casting a satchel spell. if i were you, i'd charge each herb with energy [as you would every item] if you want to make up a chant you can, otherwise, just place it in the bag.