Your CV is important because you are going to use it not only for OTCAS, but also for schools. Some schools, like USC and VCU, required you to hand in your CV, although you already made one in OTCAS.
Seriously. This is how I learn to write CVs. Here are my CVs in different formats:
PDF
97-2003 Word.
I purposely give you a Word 97-2003 document because I want to show how I do my spacing in my CV.
Also, you can make your own CV by changing the words from my word document. I hope this helps.
OT is NOT business. If you cannot quantify what you have done, you are fine. However, you should think how your past achievements is related to therapy, or even better related to OT. For example, there is no way I can quantify my accomplishments as a volunteer in a rehab center, but I can say how my experiences help me get ready to become an OT:
The point of your CV is to let your admission staff know you in about a minute. Therefore, if you do not fill in the whole two pages of your CV, YOU ARE FINE. I did not fully fill my CV as well. It is better to be concise than to fill in the whole two pages of nothing and irritate the admission staff.
Maybe it is a no brainer for most of you. However, I want to emphasized it. I believe that there are times when you think your applications and resume are great, but maybe it is not.