the formation of these hybrid orbitals naming the type

experimental evidence suggests the nitrogen atom in ammonia has 4 identical orbitals in the shape of a pyramid or tetrahedron….I need help drawing an energy level diagram to show the formation of these hybrid orbitals naming the type of hybrid orbitals found in ammonia and the 4 on the N atom and how many will actually take part in bonding and why. Also I need help drawing an energy level diagram showing the hybrid orbitals formed in the C atom when it bonds… how would the bonding with the N atom differ with the bonding with the C atom?