The Pittodrie side misfired as they opened up their campaign against Fola Esch on home soil last week.
Having taken a 69th-minute lead through Shay Logan, they found themselves quickly pegged back by the visitors' Julien Klein.
A disappointing draw looked on the cards until stoppage-time strikes from Niall McGinn and Adam Rooney eventually put daylight between the Reds and their first qualifying round opponents.
Aberdeen have now touched down in Luxembourg ahead of Thursday's return meeting but Docherty said boss Derek McInnes has worked hard over the past week to ensure their previous stuttering display is not repeated.
He told RedWeb: "Last week there was no surprise when Fola gave us a couple of scares. They are a team that are used to winning in their own league and with that habit of winning they are a dangerous animal.
"We have to treat them with the respect that we always would but we are confident in our approach and if we go about things the right way we can do a professional job.
"In the first competitive game you are always trying to iron things out and I think as the game went on our decision making got better and we got sharper.
"The important thing for us was that we kept going, nobody thought that it wasn't going to be our night. Since then there has been some more fine-tuning so we will be a bit sharper in the second leg.
"Each team will be picked accordingly to try and win that game and to execute our game plan. We are very fortunate that we have good players in the squad and we will make sure that we pick the right ones to try and get the game won."
Source: BT Sport