Good afternoon, there are different systems of astrological talismans and magick, the ones I prefer are from the Islamicate occult systems (Picatrix and the Shams al-Ma'arif are two of the best known). You are in essence trying to create an artifact that resonates with a specific celestial influence, that can then be directed towards a specific task (such as making a Jupiter talisman to help get a job promotion). There are all sorts of requirements, including metals, timing, place of the ritual itself, etc. If you are following the Islamicate methodology, remember that intense prayer and purification is required prior to embarking upon the talisman's creation itself (just like the prescribed days of prayer and seclusion in Solomonic grimoires). To get the best results, follow the instructions listed in the book you are drawing the talisman from, or as close as you can (the more in sync with the essence of the astrological body/sphere that you are attempting to harmonize with, the stronger the talisman and the resulting task that it is being used to accomplish). Just keep in mind that in magick, there are no absolutes, no singular ways of doing things or creating things, which is why there are variations even within the same basic body of practice (individuals personalized their practices). Knowledge evolves and grows or it falls by the wayside and is forgotten. I'm curious what talismans you are going to make if I may ask?