Note Taking App - Folders

Shot 1 - Note Taking App
Hello Dribbblers, I am glad to join this community of amazing designers. Great Thanks to @Arun Prasad for the invitation.
This is my first shot of the series: NOTE TAKING APP
The key aspect of focus in this redesign project of a note taking app is Usability. The application is designed in such a way that all the main controls are placed within the thumb range and have gesture shortcut for some other important functions, which is especially effective for using devices with big screens.
Any feedback is highly appreciated :)
Thanks!