Just did Amdapor & told by tank I need to read WHM guides cuz Im doing my rotation wrong.

Was my 1st time there so was new to it, but never had problem before with new places. He'd pull 3-4 groups then would stop when he was about 1/4 health & Id start healing like mad

I would cast Swiftcast>Cure II>Pres of Mind>Cure II until tank solidly over 1/4 health & close to 1/2 health. Once he wasn't close to dying I'd throw a regen & then top him off. Only reason dont throw regen 1st is the GCD

Only reason we wiped was because Benedctn was on CD from prior pull. That was when he informed me I wasn't healing right

What am I doing wrong? am I missing any spell/crosspell. Hate mad tanks and he was mad I wasn't healing in correct order.

Up til now thought I was doing okay. Been doing Tam Tara EX with large mob pulls & haven't had a wipe so thought I was doing fine, but now I think Im not ready for other experts. So any advice or criticism would be very welcome! Thanks!