Tiles for Google Chrome Web Store App

The objective of this project is to design a tile in 3 different sizes for an extension that will be released in the Google Chrome webstore. The tile sizes are: Small tile - 440x280 Large tile - 920x680 Marquee - 1400x560 The guidance given by Chrome Web Store is as follows: Fill the entire region, using square corners and no padding (full bleed). Use a medium or dark background. Avoid text in the image as much as possible. Don’t put white elements along the edges of the image; the edges should be well defined. Don't use a screenshot. Your image should display well when reduced to half size. The app is called SiteCop, with a tagline of Protect Yourself from Time-Wasting Websites. My requirements are that it should look attractive and clean, stand out in the web store, and should promote the brand SiteCop. Less is more, simple and clean is best. One note: the extension is going to be released in several languages over the next few months, so I will need the psd and development files in order to translate the tagline for release in other countries.