Birth Certificate is sufficient enough for "Birth certificate or other evidence of age".
For "Evidence of work experience " I've uploaded experience letter, job description letter, offer letter, all promotion & position changed letters, all annual salary certificates those were used for yearly taxation, monthly payslips of last 3 years, release letters, appointment letter of the new employment, bank statement of last 1 year, resume (whatever you've regarding your job experiences.

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EA applied 27/07/2011 | +ve: 28/09/11 (Telecommunications Engineer) | 175 applied (online|self) on 25 May 2012 | now waiting ....