The right environment

It is good to practice in a quiet location, with the certainty of not being disturbed during the time of the magical work. The bedroom is not recommended because of it being so intimately impregnated by you and your sleep could also be disturbed afterwards. The kitchen is not the right place either because it is a place where we conduct too "rough" tasks. Rather, choose a neutral room, like the living room, an office or a unoccupied room such as a cellar or an attic. 
Your body and mind should be as calm and serene as possible. If it is necessary, lie down a few minutes before you start, breathing calmly. Or take a bath if that relaxes you. Practice barefoot and dressed in non tight clothes so that the energies circulate better.