I used my own free-weaving process that I sort of make up as I go along. I've laid out the steps I went through below. (Forgive the poor quality of the pics.)
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I first drew a cartoon on cardboard from a composite of found photo images – the cardboard cartoon was both loom and a loose color / value guide
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Then I cut around the cartoon
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Next, I stitched in the main structures (in this case veining) with strong cotton yarn sewn directly to the cardboard
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And then stitched it to another piece of slightly larger cardboard and outlined the whole leaf with heavy wool yarn that I secured with thread
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I trimmed the base cardboard and cut notches in the edges to hold loose threads… then began free-weaving
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I just kept filling in more areas and changing threads often
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At this point, I’ve woven to the density I want. This is weeks worth of work for something not much bigger than my extended hand, but is exactly what I want as far as size and structure
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…the back side with all the loose threads tucked in their respective notches… and here you can see the source of cardboard – a pizza box from The Red Onion, a fine mom and pop pizzeria with great pizza.
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Then I separated the two cardboards with the seam ripper
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The two pieces of cardboard
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This is the tricky part: I had to cut away the structural yarns from the original cartoon being careful not to pull them out of the weaving
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The freed form… looks like a sea creature
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I wove the ends back into the weaving as I would with a tapestry… and again, a very long process… only half-way done at this point
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The front side