This is a simple project. We have an existing icon (icon.png) which we just need in 2 different sizes. Plus we have one promotional image that is needed. So 3 images total.
The details are below. The icon image and thumbnail image should look substantially like the icon.png image that is attached, but larger and not just scaled up using image-resize command as that will cause it to blur.
The promotional image can be comprised of the icon image with an intersting background or someway to get it to stand out. See android_market.png and android_market2.png (attached) these show some promotional type images just below where it says "Apps|Games|Verizon" in android_market.png or below "Top Paid| Top Free| Just In". But note that these promotional images are a different size than the required one (290x140)
The promotional image should scale well so that it looks good when viewed on the web with 96 dpi monitors as well as on high resolution phones that can go as high as 240dpi.
Icon Image (based on icon.png attached)
A representative icon for display on the desktop of the mobile device after app installation
114 x 114 pixels
A larger version of the icon image for use in search results and on product detail pages
512 x 512 pixels
For use in promotional placements