Here at XDA, we not only encourage people to develop new things, but we also try to promote users learning how to develop. With tutorials out there ranging from compiling from source to creating applications and even some advice from one of the greatest ROM developers out there, XDA is not only a place for developers to release their amazing work, but a place for users to learn how to create their own amazing work as well.
As such, there’s usually a tutorial for learning how to do pretty much anything. One fun thing that ROM devs sometimes do is insert pictures in the notification drop down. A favorite is the little Android mascot poking his head out of the corner, but you can find numerous others. Now there is a tutorial for the HTC EVO 4G LTE that shows users how to do precisely this.
The tutorial requires some knowledge to use, and definitely isn’t for beginners. User will need to know how to compile and decompile apk files, and will also need a a text editor such as Notepad++. From there XDA Recognized Themer and Contributor jeffsanace runs the user through which parts of the SystemUI.apk they need to modify, and how to modify them.
Jeffsanace also runs through how to remove the clock from the notification bar using roughly the same process. Users who attempt this will get a good introduction to .xml editing, and will know how to compile and decompile APKs by the time they are through.
Head to the original thread for the full tutorial._________