Unhappy [Q] Can't load cmw recovery mode in xperia p

Hi I am about to flash my xperia p device with slimkat custom rom.. following steps from this site.
"droidors.com/2014/02/25/update-xperia-p-lt22i-to-android-4-4-2-kitkat-with-slimkat-custom-rom/2/...

After fastboot reboot m stuck while loading recovery mode..
pressing repeatedly volume down button (Even tried up/ power/ camera buttons) doesn't show any sign...
and device stay in blank screen state after reboot.. only sony logo appears and then blank screen. Please Help...