First, think of an idea. Next, find a similar article on Pubmed (Medline) and check out how they designed their study. There is no need to reinvent the wheel. You can use similar statistics as well.
Next step is to write a study protocol.
Ready-for-use forms from the CSU website about research with human subjects:
Approval form to be submitted to IRB (Institution Review Board)
Protocol to be submitted to IRB
Consent Form - very, very important
Consent Form for Anonymous Questionnaire-Only Research