Create catchy banner ads for AdDuplex monthly contest

AdDuplex

AdDuplex is the leading cross promotion network for Windows Phone and Windows Store apps empowering developers and publishers to advertise their apps for free by helping each other. Just create an ad for your app, place a line of code into it and start advertising other apps. They promote yours in return.
This is our website: http://www.adduplex.com

We need banners to promote our monthly contest for Windows Phone developers. Participants will be able to win a high-end phone (Nokia Lumia 930, Nokia Lumia 1520 or HTC (M8) One).
Banners should be catchy and clearly targeted at app developers.
We will use these banners for re-targeting and Facebook ads.
Banners might include image of one of the phones I mentioned before (but nor necessary) and we could change it if there is a need.
The text should be: Promote your app for free - win Lumia 930 (this should be editable, also depending on what phone we will be giving away)

Sizes needed: 1200x628; 600x315; 728x90; 300x250; 160x600

Notice that our service is precisely for Windows Phone and Windows 8 developers, so that's the style we are going after.

We need both jpg/png files and source (PSD) files.

Please use "standard" fonts (so we can edit the text).