If you please, take a look at that video, I am trying to hide "Isla!" Behind the fire ring so when it burns through it reveals "Isla" on a slab however I am very new to after effects and don't know how to hide the layer behind when I tried to use "ROTO Brush" this happened (If not working visit : https://gyazo.com/ac2d759b9fd50cc58f168f0c820efd32)
It's all layers and masking. Think of how you would do it with photos and an razor blade and arrange your layers in the same way. AE basics....
It is as Rick says.
An introduction to compositing features in After Effects is here:
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