Bié zìmíng-déyì le, háiyǒu hěnduō xūyào gǎijìn de dìfāng.
Stop patting yourself on the back - there's still a lot that needs improvement.
Tips
memory
自 (self) + 鸣 (make a sound / crow) + 得意 (proud / pleased). Picture a rooster crowing about its own achievements - crowing at itself. That smug self-congratulation is the heart of this idiom.