@ ishantn900:
You must have installed rootsh package. And now:

1. connect your phone to PC in Mass Storage mode and extract all files from archive to new folder (for example called "locktheme")

2. unplug the phone from PC, and open X-Term

3. your theme files are in /home/user/MyDocs/locktheme so now type into terminal

cp /home/user/MyDocs/locktheme/Images /opt/qtlockscreen/default/

4. now copy all fonts to location, so type

cp /home/user/MyDocs/locktheme/*.ttf /usr/share/fonts/

5. and finnally copy ini file.

cp /home/user/MyDocs/locktheme/*.ini /home/user/.config/sakya/

6. now restarting the service. Type

killall qtlockscreen

7. DONE!

See, it's very easy