I believe there are some consistent things you can do regardless of the industry or size of your venture to impress clients.

• Position yourself as an extension of their business, a trusted partner not just a vendor.
• Always respect your clients regardless how they treat you
• Show them that you trust their company and the work you do together
• Show them that they can trust your company and judgment
• Be transparent with clients and respect their time
• Be authentically grateful for their current and future business
• Remind them from time to time what sets your venture apart
• Lastly, surprise them with great gestures