You can also contemplate the office of the spirit and the many ways the description of the office can be interpretted and applied to your life. For example if a spirit provides invisibility do you think you’ll be transparent or just go unnoticed or unseen by others? You can use incense and light appropriate to the spirit while in your temple to help as well. Working with a King gold light and frankencese, a Duke green light and sandalwood etc etc. If you unaware of the rank use the planetary correspondence of its commanding spirit. Read any myths or legends of the spirit if available, contemplate its appearance, make all this as real as possible in your mind before calling on the spirit.
If you need help with correspondences google can usually be of good use as well as Crowley’s Liber 777.