This brings to mind an ancient proverb: don't bite off more than you can chew.
It will be tempting when trying to jazz up your sales to take on ANY work or projects. Projects that are on the fringes of what you actually can do well (or even enjoy). Resist the urge to venture out of your specialty - it can set you up for failure and take you away from what you do best. Plus you will not be as accessible to your already happy clients.
What was it that Tom Peters said a long time ago? I remember, "Stick to the knitting."