"Aren't I amazing?!"

• "Presto!": Hyph
• Spoken fanfare
• "Look at this great thing I did!": Hyph
• [mic drop]
• Revelation accompanier
• "The deed is done!"
• Producer's cry?
• "Look what I did!": Hyph
• Self-congratulatory cry

Wiktionary Word definitions in Wiktionary
interj. (alternative spelling of ta-da English)