Got time to judge my sales skills?

Hi everyone!
In a couple of weeks the startup where I work will launch a new cloud storage software. I will be handling the "contact sales" stream and, for this reason, I'd like to have feedback on my sale's pitch and demo presentation.
It would be a 20min call and I'm only asking for honest feedback on the clarity and level of engagement the call generates.

Is there any good soul willing to help me out?
Any help you can provide me will be much appreciated!
Thank you! M.