mapping [HELP]

Hello there folks. I just want to ask how can I make my maps all in one image like this (below) because I am modeling a structure which has so many diffuse maps and entities (models).Is there  a possibilities to create a single diffuse map and a single entity (model) with all the maps needed.
Thank You.

unwrap

panong unwrap sir tapos iaaply m yung mga images sa photoshop?

up

yup unwrap map. provided iisa ang buong model mo. pwede ka din magunwrap map by parts. say meron kang 100 difusse maps. pwede mong gawing 10 difusse maps nalang na may 10 maps within the unwrap diffuse map. 

yup kailangan mo ng photoshop. 

also, aralin mo ang unwrap map. madali lang yan gawin, more on organizing your model lang din. good luck!

Nagsearch ako sa net sir uvw unwrap ba at texture baking? Yun ba sir? Salamat.

yup tama yun.

ahh ok po sir bokkins alam ko na tatahakin ko . thank you