TRILEGAL and the Besancon models for the galaxy have been very important for simulating expected the photometry of stars, to compare with observations. However, they are not open source codes; it is not possible to change the underlying Galactic model or add a known substructures. In order to better understand the known substructures of the Milky Way (e.g. Monococeros, TriAnd, Sagittarius Stream) that are not included in previous Galactic models, we are developing a new model. Our model allows us to predict the star counts from the main Galactic components plus the measured density distribution of two substructures: the Virgo overdensity and part of Sagittarius stream. We show preliminary results of the comparison of the model with observed data. In the future, additional Galactic substructure will be added.