First you need to root your device and get a CWM recovery. For this youtube it. Then place the rom in the root of your sd card. Follow the points below:
1. Enter recovery mode and go to wipe data/factory reset and select yes
2. Then go to mount and storage and format system, select yes
3. Wipe cache partation, select yes
4. Install zip from sd card and select the rom and install.
5. After installation, go to advanced and wipe dalvik cache and clear cache partation again an then reboot! Done!
Click the thanks button if i helped!
Sent from my Canvas 2 working on stock jellybean 4.1.1