He hopes to see even more improvements as the players get used to his system.
Albion take on Crystal Palace this Saturday looking for their first win under the new boss.
Mel said: "I think two weeks is good work for us. I think this week will be even better for us in getting the message across.
"We have good work to do at the training ground. It was very important to not lose yesterday because the players need to believe.
"To lose two games (back-to-back) would be no good for us so we had to get something from the Liverpool game.
"The Premier League table is very compact.
"For us it was important that we work day to day, week to week and we need to make sure West Bromwich remains in the Premier League."