Your pronunciation of BGK sounds good, and I appreciate your smile throughout the read; it adds warmth to the delivery. The zombie noise was decent, but you can have more fun with it and make it even sillier. When doing an advertisement, remember that your character is enthusiastic about the product, so bring that energy and excitement into the read. Vary your delivery to keep it engaging, and be mindful of pacing, especially toward the end where it became a bit rushed. Keep practicing and experimenting to bring out different aspects of the character and the script.