To make a Bohr model of carbon, you must check the Periodic Table to see how many protons, neutrons, and electrons carbon has.
The Bohr Model of Carbon(C) has a nucleus that contains 6 neutrons and 6 protons. This nucleus is surrounded by two-electron shells named K-shell and L-shell. The outermost shell in the Bohr diagram of Carbon contains 4 electrons that also called valence electrons.