I am new to blender and I downloaded a model with three different materials shown on 'Textured' mode, I also tried this first on Blender Render and here's what I did.
Step 1: I imported the model //The Model is a wavefront file//
Step 2: I added the texture to it + I deleted the lamp and cube
Step 3: I split screened it and I went ahead and add a blank image with a size of 4096 * 4096
*Bake Mode: Texture
*Selected to Active
*Margin is 16px//Distance is 0.000//Bias is 0.001 And from there, the texture/material seems deformed and out of hand.