hello everyone,
Past days ago, I used to texturing using diffuse image texture and I thought it was enough but it was not.
on this project, I was trying to texture with diffuse, rough, and normal map textures and I used Cycle in rendering .so this project was only for fun but I was trying to make a residential house with two stories
, and here is the final render.
All textures I have used are from https://texturehaven.com/ this is the best site , I have also seen that 
I think now I have understood that you can make a good model while you know some basic stuff in blender like extruding,and cuts some unwanted things. as you see on my screenshot below it all start on extrude plane.
making the roof below i have used an array modified so i turn one simple curved piece of plane into this roof .
And i have a tip i used to render in cycle and i see it decrease a rendering time
All you have to do is increase tile size to use while rendering and you will thank me later😁😁😁.
Thank you all have good day