When following up on a consulting proposal, it's important to choose the best method depending on the client's preference, the complexity of the proposal, and the stage of the sales cycle. Email is a good way to send a quick reminder or summary, while phone or video call is better for addressing concerns or negotiating terms. To follow up effectively, personalize your message, be respectful of their time, provide value, create urgency, ask for feedback and commitment. Make sure to use the client's name, refer to their specific needs and goals, and highlight the benefits of your proposal. Avoid sending too many messages or calling too often; instead, ask for their availability and schedule a convenient time to talk. Offer insights, tips, or resources that can help them solve their problem or achieve their objective. Remind them of the consequences of not taking action or the benefits of taking action sooner. Encourage them to share their thoughts and listen to their concerns with empathy and confidence. Lastly, ask for a clear next step such as a confirmation, revision, or signature.