My method for creating Sigils is making a sigil of your own making (a personal seal/sigil), write it an ancient language (I use futhark) what the sigil/seal represents. Example below:
Then once it is done, or I am satisfied with the sigil/seal, I place both my hands over it (an inch from touching the paper), an I push out my energy through my hands an focus it in to the sigil/seal. At the same time of using the energy, you must also focus its purpose, what is will be used as (can be quite literally anything), and how powerful it is.
Paper however isn't very effective for creating sigils or seals, so I would suggest using something more stronger like Wood, Stone, or Steel, or hell you could use it on a stone like Obsidian, Ruby, Topz, ect. ect. But on those kinds of stones, I have no idea of what would happen since some beliefs use stones like Topaz an whatnot to amplify something around them or like Obsidian to absorb negative energies.
Hope this helps, an note that this is just based on my experiences, may be wrong an it may be right, it depends on the effort & focus you put into it.
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