Alrighty. So first of all, I hope you know how to export your model as a obj. After that, open up openbrf. Now, click file or edit, can't remember and click import new static mesh. Now, find your obj file and import it. It will ask something about multiple materials etc, just click no. Now, your model needs a material which will show the texture on it. So, go to the material tab, click create a new material. We will call this new_mat. Now, without closing openbrf, go find your models texture and convert it to dxt1 dds format. Then, copy the texture to your modules texture folder. Now,in openbrf, go to the texture tab, click new texture and type the exact same name of your texture which you put to the texture folder. Now, if you did it right, you should be able to see a preview of the texture in openbrf. Now, go back to the material tab, and on texture a, put the name of your texture to that field. Now, go to your mesh tab, edit the material which it will use to your material, which I said to be, example, new_mat. Now, the mesh will have your material. Now just save it as mb format brf file. I didn't explain using normal maps, specular nor the shaders though.