So, I'm not the worlds most creative cake baker, but I've decided it's the year of no cheating (ie, getting cakes made) and in going to make my DD her 1st birthday cake.

DH has decided the theme will be rainbow so I agreed to make a layer cake.

Anyone made one? Any hints or tips?

Ive been on YouTube and a few have said to use foil pie tins, I'm worried it will burn the bottom.

Also, would it be cheating to use the ready made Betty Crocker frosting you can by in the shops between layers + as main outside icing too??

Whats best to colour the batter, I have normal food colour dyes here, but I've seen some sites say to use gel dyes (where do you buy them from?)