Upper world heavenly deities are not worked. These are the deities and forces you surrender to and receive from. You do not make requests on how things are going to be or ask them divinational questions. They are higher than us. By surrendering to them in meditation and in prayer, their works can be quite profound. This is the source of miracles.
Lower forces, spirits of the earth and underworld, can be worked but you must consider these forces and not overwork them. You can only work the spirits for the benefit of all concerned. There is a difference between high magic and low magic.