To apply as an adult, you will need to include the following with your application:
* proof of permanent residence
o A Record of Landing (IMM 1000)—a document that is sometimes folded and stapled into your passport—if you became a permanent resident before June 28, 2002; or your Confirmation of Permanent Residence (IMM 5292 or 5509)—if you became a permanent resident on or after June 28, 2002
o A permanent resident card, a copy of both sides, if you became a permanent resident after June 28, 2002, or if you obtained a permanent resident card as an existing permanent resident
* two pieces of identification (for example, a passport, a driver’s licence, or a provincial/territorial health card), at least one of which contains your photo
* two signed citizenship photos, done according to the instructions in the guide and
* the receipt of payment (form IMM 5401—see below) showing that you have paid the $200 fee (which includes a $100 right of citizenship fee and a $100 processing fee).
www.cic.gc.ca/english/....asp#step2