iPad/iPhone Game - UI Design

QizWiz

We have developed an online educational quiz game that is similar in concept to hangman.

The player is presented with the definition of a word and a sentence which uses the word. However the word is blanked out with underscores for each missing letter. The player’s goal is to select letters from the screen keyboard and try to determine the missing word with as few incorrect letters and in the shortest possible time. To achieve maximum points (1000 points), a player must determine the missing word in less than 20 seconds and enter each letter in the correct order.

The core functionality of the game is now complete and can be viewed and played at http://bit.ly/bpvAFk (Chrome, Safari , FF)

The game now awaits the skills of a talented designer to turn "programmer graphics" into "designer graphics".

DESIGNS WE LIKE:
http://bit.ly/aoTAzL
http://bit.ly/cdQrAv
http://bit.ly/bsksXO
http://bit.ly/125e6C

We want QizWiz to be the best game in the world for people to expand their vocabulary and have fun.

The game should appeal to players of all ages from 5 to 105. Therefore the graphics should appeal to all age groups and should be edgy and crisp.
The is a casual web-based educational game that can be played on mobile devices as well as on desktop browsers.

The design should work for both the iPad and iPhone screen size (portrait and landscape). We're not looking for two separate designs - we're looking for one design that can be adapted by simply moving elements around or resizing images.

We require the following graphics for the QizWiz iPhone and iPad app.

1. iPhone/iPad splash screen – 320x480px, 768x1024px

2. iPhone/iPad application icon – 57x57px, 72x72px 512x512px

3. Game Main Screen - see attached mockup.

Attached is a screen mockup done by me, the programmer of QizWiz.
You can take this design and improve it. Fix up the colors and design elements such as icons, logo and backgrounds, or you can go crazy and produce an entirely new design and style and incorporate a cartoon-like character.

The competition winner will not only take home the prize, but can also have their name up in lights in the game credits.

We need your artwork to be provided in a layered .PSD file, so that we can easily resize graphics as needed, and add/remove elements as the project evolves.