English - Language Errors

There are some language errors in the advertisement. Let me comment on them:

1. “Packages includes” should be corrected to “Packages include”. The plural verb “packages” must use a plural verb “include”, not the singular verb “includes”.

2. “Register Now as a Early Birds” should be corrected to “Register Now as an Early Bird”.

3. “Certificated of Attendance” should be corrected to “Certificate of Attendance”. The noun “certificate” is used in the phrase, not the past tense or past participle of the verb “to certificate” which means “to attest by a certificate” (Concise Oxford Dictionary).

4. “11st” and “12nd” are incorrectly written. They should be written as “11th” (eleventh) and “12th” (twelfth) respectively.