Vorm has kept 10 clean sheets - a record he is proud of and believes he can improve today against Manchester City.
Vorm warned: "I don't think we are safe yet, but last weekend's victory at Wigan was an important one for us.
"I don't think people will say we are playing like a team going out of the Premier League. We have shown we can win against anyone, especially at home. We've already beaten Arsenal, drawn against Tottenham and Chelsea. We drew at Liverpool as well."