Wct issue

In a WCT contract, where both material & labour are identifiable,

1)Is the below billing correct?

Material  200000
Mvat @ 4% 8000

Labour services 100000
Service tax  10300

total   318300   Is this billing correct?

2) While releasing the payment on which amount WCT TDS is to be deducted? on 110300 or on 318300?

thanks.