I am also active on Wikipedia and have a long history there. My Wikipedia screen name is Invertzoo.
Two things I did want to say are these:
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You can put up a simple stub which is quite useful if it contains a correctly identified image. It certainly does not have to be a full article right of the bat! Just make sure you have a couple of good references already in there.
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Wikipedia is not a “how-to” source, so be on your guard when listing distinguishing characteristics not to say “…this is how to tell the difference between a Bull Thistle and a Creeping Thistle”.
I would also say in general, do try to get used to editing Wikipedia for a quite a while before you try tackling a new article by yourself. Also, put the article or stub together in your sandbox, so you can see how it is doing, before you put it up.