Dear,
My name is Arjan van Tongerlo. I am a native Dutch (male) speaker with C2 level English skills. I have been doing professional and university level Dutch presentations (and voiceovers) for numerous years.
Since I can't attach files via Freelancer, I am willing to send you a sample voiceover via email or such.
If interested, I hope to hear from you soon.
Yours sincerely,
Arjan van Tongerlo