Upper image is version 2
Bottom image is version 1

The V1 is look to flat on it, so i feel like ugly, cause i love round item, so the burger to flat

Then the V2 is look round a bit, but when i think is good to go, i try make it more round and bigger and see the effect, is more better and adding seed on it to make it more realistic.

So this is how the burger evo.