Vector Flowers Painted

I am taking part in Wet Canvas's Weekend event again.
This week a photo of flowers is included from the reference photos. I might do a few more images before the week is out.

This is a digital painting created in Corel Draw as a vector file. Then converted to a Riff file and painted in Corel Painter with the colored pencil brushes.
If you look close you can see the details of the pencil lines. I saved it as a jpeg and posted it in a reduced size for the blog.

The bottom image is the first stage as a vector version.
Using vectors is sort of like cutting out shapes and pasting them down piece by piece. At least that's how I think when I am putting them together.
Does anyone out there know of other vector creating software?  A friend asked me this week and I could not answer the question.