Poppets can be made from a number of things. Cloth, wax, corn husk, herbs, cardboard, paper, clay. Also you need to consider the use for the poppet when constructing it, i.e. healing, protection, purification, etc. Which will help you determine the color, herbs, oils, stones etc. that you can use to increase the vibration of the poppet being made.
A poppet for self love could be made from Pink cloth, filled with apple seeds, bachelor's buttons, lemon balm, clover, rose oil, and a peace of rose quartz. Now with the use of the poppet determined, also take in consideration time, day, and any other astrological events needed or desired to further increase the vibration.
After the poppet is ( constructed and charged/aligned to specified vibration) You have completed the steps to making a poppet.
Hope this was helpful.