MakIcon gives you the opportunity to make your own icons for iOS

  MakIcon is an application launched today in Cydia, and with its help you can make your own icons for iDevices. The application is able to modify existing icons, or give you the opportunity to make new ones, all with the help of pictures saved in the photo library of our iDevices. The icons can be in any format you want, and to apply them you can use the iFile utility that will give you the opportunity to manage the iOS file system directly from the iDevice.

MakIcon can create an icon, change the rendering, ideal if you have a square icon and you want to make it round, or if you have a theme where the icon is not displayed correctly. by adding it to your photo library and you can make it as it should be in your theme, this application is for developers, designers for themes or for a user. In fact you should have your image in photo library, go in MakIcon, choose your image, select how the icon should be, click on make icon and it's good

  MakIcon is available for $1 in the BigBoss repo Cydia and works on iOS 4/iOS 5.