In short, more often than not, voicemail greetings feel bleak and boring to callers. If you’re a business, boredom is an awful way to start off the conversation with potential customers. Since the attention span of a human being fluctuates around 8-10 seconds, filling them up with a standard voicemail greeting is the worst idea you can have.
First of all, I want to say great work on using the phrasal verb “to pick up!” Native English speakers love phrasal verbs and we use them often. In this example, to pick up the phone means to answer the phone.

Good luck! For years, my home voice mail has my partner's cell phone number on it and an explanation that he doesn't answer the home phone. It is amazing to me how few people pay attention. But the attempt is still well worth it.
Another great thing you can do in your voicemail messages is to leave a few spaces for your prospects to record their message, most of the prospects will do it because they know they will be reached out sooner given the situation of their need.