Dave Jones admits Cardiff have "a long way to go" after their stoppage-time setback against Nottingham Forest.
A goal in time added on by substitute Lewis McGugan rescued a deserved point for Forest after Jay Bothroyd had given City a 63rd-minute lead.
"We sat too deep and were punished for it," said the Bluebirds boss. "We have four new players at the back and they are learning how to play at this level but we still have a long way to go in terms of being stronger as a unit."
He added: "It was a hard-earned point against a very good side who have good shape and can catch you on a counter-attack."
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