Default [Question]Help.

I dont even know if I'm posting in the right place as maybe someone will yell at me for having such an idiot question.

So I have a APK I want to add a few effects in it (psh)
it's composed by resoures.arsc
and xml. how do I edit those archives.?

question 2...
what do I need to create an APK for the camera? like ... does anyone have tuts for it?

Thank u so much