no... that's not what he asked you to do.
first, what wallet did you use to send these two transactions? is this address 1DeMF9cD2 in your wallet?
if that's your address, he recommended you to create new transaction using that amount 0.00018792 BTC in 1DeMF9cD2
use that 0.00018792 BTC add another inputs and send back to your own address with tx fee 0.001 BTC