How to I Import Textures in my project…
like *.bmp, *.psd etc…
and also give example of photoshop how to make better textures…
thanks in advance all of… 
just drag and drop it in in the editor or put it into the projects Assets folder
right click on any asset in you’re “project window” inside unity to find you’re project folder. Then choose show in explorer. Then you can add images in that folder by dragging or copy/paste etc.
As for textures in photoshop. Go to menu/Textures/ and select the CreateBeautifulTextures button.
but i’m kidding… Creating textures can be a complex task. So there isn’t just 1 short answer what covers it all.
So maybe if you are more specific about what you want to know. Or where the problems are. Then someone can give you advice.