So as my title says. I am working on this scene
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I would like to add a few spider webs like this

I have tried a few different things. I am rendering in cycles so the cloud generator wont work without some post work and BI renders. And I am not even sure that will work.
I tried using the grease pencil, then converting to mesh etc. But that just becomes resource heavy after extruding etc.
I thought of using the above picture on a plane with a alpha, but I an only imagine how tedious it would be to seperate the web from the back round.
So after giving it a fair shot I thought I would throw it out there to the community and see if anyone had an idea.
Thanks in advance