Glasgow's 35-22 win over Connacht secured a home semi-final but Gibbins says Warriors work to do if they want to finish the job.
Speaking in The Scotsman, Gibbins said: "It’s nice knowing we've got a home semi. It's always been a goal of ours, so it's good to tick those off. Now that we've got it we just want to park it and focus on the next two weeks.
"We've got two big games, Ulster and Edinburgh, so we just want to focus on that. We're still not good enough to win the comp, so we need to get better in certain areas. That's what we'll be looking to do in the next few weeks.
"We were really happy with how we played (against Connacht)," he continued. "It's a hard task to play a full 80 minutes, so we've just got to somehow work out how to be better for longer and we'll be in a good place the next few weeks.
"I think that second half, looking back at the game there, us leaders – and myself personally – could have handled situations a bit better. We were starved of the ball quite a bit in that second half, and when we got the ball maybe we could have played a little bit differently. I think because we didn't have much of it we tried to over-play and then we gave the ball back to them, got stuck down there again and it all sort of spiralled into a couple of yellow cards."
Gibbins went on to agree with Glasgow assistant coach Jason O'Halloran that the psychological side of the sport is an area where the Warriors need to get better.
"The mental side of the game's huge. As you get older, you learn to deal with situations better and it's not just a physical game any more. You've got to deal with pressure, and with the finals coming up we've got to take that on our shoulders. The mental side of the game's huge coming to the end of the season, so we need to grow our game in that sort of area as well."
Warriors travel to take on Ulster on Saturday with the Belfast men still in with a chance of the play-offs.
"We want to win every game we play," Gibbins added. "We travel to Ireland and it will be a tough ask to win over there, but I think we've got the team to put a good performance out there, and when we get things right more times than we don't then usually we come out on top."