This study explores the magnetic characteristics of ferromagnetic thin films with a body-centred cubic (BCC) lattice structure, emphasizing the effects of spin layer configurations and higher-order anisotropy terms using the fourth-order perturbed Heisenberg Hamiltonian. The magnetic behaviour of BCC films plays a critical role in the development of advanced technologies such as spintronic devices and magnetic memory systems, where precise control over their properties is essential. By performing MATLAB simulations, we analysed energy variations in response to spin exchange interaction and azimuthal angle through the creation of both 2D and 3D plots. Our results demonstrate that the total magnetic energy is particularly sensitive to spin layer configurations, with significant reductions in energy observed when the number of spin layers is increased. Specifically, energy in two-spin layer films was found to be on the order of 10³⁶, while in three-spin layer films, the energy order dropped to 10¹⁹. Additionally, distinct energy maxima and minima were consistently observed at specific angular positions, and energy distributions varied between different spin layer configurations. The analysis also revealed that stress-induced anisotropies notably affect the angular alignment of the magnetic easy and hard axes, leading to deviations from the 90-degree angle between them depending on anisotropy constants.