Here is some feedback: A demo to play around with, before signup would be nice. I would even say having it on the homepage would be even better. The video is cool.
Look at it this way... Right now you have a zero % chance, if I try it you have a 50% chance... You are working against yourself. Unless I have an absolute need for your app, I'll just leave. If I demo the app at least you have a 50% chance I'll like it (or maybe I know someone who will)... Save what I do in a cookie or local storage or in a form field and submit it if/when I signup. - Hope this helps
https://bubbles.bubbleideas.com/letters/pencil-brush-and-wat...
Great feedback, keep it coming!