Portfolio Advice

I was wondering if you have any advise in regards to creating an architectural portfolio for graduate school for someone who didn't major in architecture. I'm trying to get a good idea of what the school would be looking for with the knowledge that my undergraduate studies were in another field. Any advise would be helpful, thanks!
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With regards to creating a portfolio, I would suggest the following website --

Portfolio Design
http://portfoliodesign.com/

This website talks about process; you may also want to obtain the book version by the same name.  As your undergraduate degree is not in architecture, do not feel you have to submit architecture; submit creative work --

Contact the graduate programs to which you are applying and see what they say.

Look at examples on https://issuu.com/home

Search Google for Portfolio Requirements for ideas posted by graduate programs. 

Portfolio Requirements:

A portfolio of student and professional work is required of all applicants demonstrating the applicant’s abilities in architectural design and communications. Examples of work should include undergraduate design studio work, sketches, free hand drawings, construction drawings, photos of architectural models, and digital models and drawings demonstrating the applicant’s abilities to use architectural graphic programs such as Sketchup, Sketchbook Pro, Rhino, and others.  Portfolio content should meet the following minimum requirements:

• Show at least six [6] undergraduate design studio projects completed as a student.
• Show introductory analysis, conceptualization, project context, and project development as well as final products for each project entry. A short narrative must accompany each entry.
• Demonstrate two- and three-dimensional design development
• Demonstrate increasing complexity across the projects
• Demonstrate increasing attention to detail development of the design across the projects

Do your best and continue to ask questions and for help.