I am using the artwork of Eugene Rzhevskii.
You must purchase a license to use this art.
you can find his tubes at PFD.
♥ ♥ ♥ ♥
Size 700x700 / transparent
Go to the material and choose a background.
Go to Layers / load save mask / from disk
I use DBV Mask 35
Save as - PNG
(Now I close the image. And pick it up again)
Then add the desired tubes in the picture
Replace the copyright and your license number.
And your picture is finished: D