Chocolate Marble cake

This is embarassing.
As a lady in the house, i feel that i should know how to make marvellous cakes.
Turns out, i guess i'm not a lady yet. :)

THE RECIPE

Ingredients:
2 eggs
125g butter
125g caster sugar
155g self raising flour
125g dark choc. melted
60ml fresh milk
1 tsp vanila essence

Method:
1. beat sugar and butter
2. add egg. little by little.
3. seperate to two parts. A and B.
4. pour melted chocolate in A.
5. beat B. Add little flour, than little milk, than flour, than milk........
6. do step 5 with A.
7.put mixture B in baking tray. than A. than B. then buat sampai nampak cam marble cake.

The problem is, when i looked it up on internet, i didn't notice any instructions on the heating and minutes. So i did the usual 45 minutes, 180 degrees. (now, i don't think thats right)

++ if you noticed... there is vanila in the ingredients, but nothing bout vanila in methods. (i guess i didn't notice it in the internet)
Also, when i divided it to two, i didn't exactly know how to divide ALL the ingredients to two, u know. It was hard. It's like. why not just make two recipes, really?

So, my cake was dry and fragile. It tastes OKAYyy. just an okay. :(

REMINDER: always double check your online recipe.