I hope this post finds you well. I am, for the first time in quite some time, feeling unusually inspired, so I thought I would share my thoughts and ideas with you lot. :)
The topic of this post, as one'd guess from the title, is creating and using magical powders.
The plant you can see balanced on the knife is know as bloodroot, and it is a sacred plant to various native American tribes. Its a plant I know the spirit behind, and I've worked with it for several years, so I feel comfortable working it in to the mixture.
That being the case, I cut bits and pieces off until I felt as though I had enough and then mixed in other herbs that were appropriate to the work at hand, using things that were easily accessible. This is an arena wherein herb and spirit knowledge is more-or-less mandatory. You'll find that if you gather herbs from your property or area, you'll connect with the spirit of the land too, so this is an exercise in learning as well.
My examples provided, you can do the same sort of work if you feel so inclined. As indicated above, this is an exercise that does require a bit of knowledge beforehand, but it also will serve to deepen your understanding of the areas around your home, the spirits therein, and, eventually, the much "larger" spirits that preside over each plant. It takes a great deal of patience to work on this sort of thing, but it is intensely useful, as it does increase your sphere of influence.
If you're unsure where to start, I would suggest doing some research on the web to see what flora grow in your area, and then learn how to work with them: learn what they do on both the physical and the spiritual sides of things. Once you have that basic knowledge, start harvesting (respectfully!) and making it into your own mixture.
When I say "harvest this respectfully", I mean that you should give offerings equal to what you are taking, and be sure not to harm the plant in question, lest your work take on a darker meaning and get you on a spirit's short list.
When all's been gathered, macerated, chopped, and so on and so forth, stick it in a jar of your choosing and procure a candle.
Get comfortable, stick yourself in your metaphysical happy place, light the candle, and invoke or evoke the spirits appropriate to the goal of the work. In my case, with the herb mixture I created over the weekend, I invoked Zoroel, Sabrael, and Raphael during the creation of the mixture, and it showed within 24 hours.
Finally, have fun! Hope that helps!