Make a copy of the bank statement, setting the original back with your bank records for safe keeping.
Cover the information that isn't pertinent to the person requesting a copy of the statement. Use a ruler to keep lines neater with the black marker, covering items such as your Social Security number, irrelevant transactions or even your address of record.
Highlight the information that is most pertinent. This should include the account name, the transaction information and possibly the account number if it needs to be included.
Make a color copy of the redacted bank statement. Keep the original copy for your records (you may be able to discern information through the redactions where the copy eliminates this).