After three defeats on the bounce in Pool 1 the Ospreys recovered to beat Castres 21-12 at the Liberty Stadium.
"I was pleased with all the boys to be fair. Just having that extra bit of time to prepare this week has helped us. It's a pretty young side out there who put in a great effort," said Gibbes.
"There's a lot more areas we can be a lot more clinical in. But we will take that. We are pretty happy.
"What I was particularly pleased with was the way we worked out a solution to problems up front because they have a big pack and a good scrummaging pack.
"The flip side to that is that our line-out is nowhere near where it needs to be and that's something we need to work on. There is no magic bullet for that - it's skill execution."
Gibbes was particularly happy with man of the match Justin Tipuric, the British and Irish Lions flanker.
"Tipuric played really well and I'm really stoked for him. I thought the back row worked really well together so that bodes well," added Gibbes.
Castres and Lions second row Richie Gray said the French side were really disappointed to come away with nothing from the game.
Gray, who had to leave the field after 25 minutes with a knee injury, said Castres had come to Wales for the win.
He said: "We are bitterly disappointed. We came over here looking for a result - wanting a result - but we didn't get it.
"It leaves us on the back foot so now we are playing catch-up. We are still sitting second in the pool so we will give it a good go in the remaining two games."
On his injury Gray said: "I tweaked my knee in the first minute, tried to play on, felt I was doing ok and they took me off . On reflection it was probably the correct decision."
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