Got it! Here's a revised bid for the task:
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Hello,
Although I'm not British, I'm a native English speaker with a clear and neutral accent that can fulfill your requirements for the voiceover task. I'm enthusiastic about contributing to your project by conducting solo calls and providing 5-minute voiceovers for your educational or instructional content.
While I haven't completed this specific task before, I'm eager to learn and adapt to new challenges. I'm confident in my ability to deliver professional and engaging voiceovers that meet your needs.
I'm available to start immediately and look forward to the opportunity to work with you on enhancing your AI services.
Thank you for considering my bid. I'm excited about the possibility of collaborating with you.
Best regards,
Jackline.