It's easy to build a perovskite structure (CaTiO3 unit cell) or a graphene sheet individually in VESTA. But I am interested to know if its possible to place a Graphene on any perovskite such as CaTiO3 in VESTA. I'm trying to build but the mismatch of the lattice constant distorts the overall structure. I am new in using VESTA so any help or suggestions from the experts is welcome. 

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