My MiuiHome.apk is probably not compatible with your phone. If you send me your MiuiHome.apk I can mod it reel quick for you. If your comfortable with APKTOOL I can let you know what to change. Its very simple..
I made this for the galaxy S4 if you want to try..
It will give you a layout of 4x4, 4x5, 4x6, 5x4, 5x5, 5x6
MiuiHome apk is from Miui 3.9.27
http://www.mediafire.com/download/5e65u64ngp1klgk/MiuiHome_Layout_Mod.zip