My failed pandan cake

This was the first time I tried making a pandan cake! And I had long heard of how tough it was so I went to buy the Prima brand ready pack to make, all I had to do was adding 5 eggs and some water! But I still failed!!! Lousy....

Haha... Ok, my guess on failure?! The mixture was not beaten long enough or it was over beaten!! Tough huh?? Yes for me!! So, am NOT going to try again!! The cake was half risen!! See my picture below!! And my dear hubby still say its nice, and jokingly told me, it taste like pandan pudding!!! And I just need to tell my 'taster' it's my new invention!!! What a joke!! :( but, I must really thank him for tr support!! ;)