Tower defense, 2d, tablet game

Wanted: 2D Art for Tower Defense Game ( 7 towers, 5 buildings, 15 mobs and 4 robots). Paid position
Company - DreamTeam Mobile Windows Phone Love
Title - WarGame Tower Defense
Brief - The game is a mix of Tower Defense and strategy, where user enters new planet and fights for new sectors on the planet.
Planet has own creatures trying to destroy newcomers. The game is for Windows 8 Store.
Theme - future/robots/starcraft. Mechanical-human race fighting with insects and beasts.
Current screenshots - https://www.dropbox.com/sh/uixku38jnyk3oxs/7LjheUndVL
Team structure - 1 developer, 1 guide, 1 tester.
Compensation - paid.
Technology - Windows 8 Store apps, Monogame
Target platform - Windows 8/8.1
Contact information - email: alex at sorokoletov point com, skype: alex.sorokoletov

Work to be done - we need an art for 7 towers, 5 buildings, 15 mobs and 4 robots. Additionally, we need game icon and splash.
Objects require basic animation for movement/firing/death.
Qualities and skills required - 2d art, experience with similar themes, clear communication, responsibility.
We would like to see your work examples and CV or references.