I want use this project for my personal use and want to build upon this project. can I?

First of all, thanks.
I'm using Chrome 56.0. If there are guide lines for position in canvas, when you click download button, the image is downloading with blue guide lines.

For example:

There're missing redux libraries in your package.json. Please, add following lines at line 19 to your file:

    "react-redux": "^5.0.7",
    "redux": "^4.0.0",

or let me commit my changes and make a PR

First of all, awesome work! I learned a ton from it, thank you soo much for putting the effort into this!

Noticed https://pablo.buffer.com/ has couple of really cool features and I am super interested how they are done, is there any chance of an update to Pabla from there? Even an non-working dev version would be awesome to see :)

Thank you once again and hope you get to read this soon!