Create promotional banners for Google Chrome Store

Sandglaz

We're a cloud-based Project & Task Management for small teams.

We (http://www.Sandglaz.com) need 3 promotional banners to use on the Google Chrome Store:
* Large: 920x680 (start your design with this size)
* Small: 440x280
* Marquee: 1400x560

This is where the banners will end up, please check out some of the other designs other companies are using : https://chrome.google.com/webstore/

Start your design with the large (920x680) size, then adapt it for the small and marquee sizes.
We're looking for a simple, clean design that conveys we're a productivity app for teams (project & task management).

Things to include in the banners:
* Company name: Sandglaz
* Positioning: Project & Task Management for Teams
* Our logo (attached)
* A creative element (one large checkbox?) that explains what we do

Some other requirements for your design:
* Use saturated colors (if possible)
* Avoid using white or light gray as the base of the banner
* Make sure each image works well and is readable when shrunk to half size
* Fill the entire region for each banner size

Different variations/concepts to try (you don't need to use all of these things, just pick one as a starting point):
* Orange background (the same orange color used in our logo) with white text.
* Convey the idea of tasks being shared between people and within a team
* A task box with a checkmark

Final deliverables: 3 .psd files (one for each size).

We will provide feedback daily until a winner is chosen.

Sometimes Google rejects the images, we'll need to be able to reach you for small tweaks if the images get rejected.