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A Tag Line Can Be long or short. But it's always an image that you can nail in one frame. It has to feel right to you. They capture one of your essences. They change over time. You digital media should deliver on the promise of your tag lines. Use them through out your marketing.
FYI. Think of marketing as getting known or sharing your gifts, building relationships. It's not as nasty as it can sound.
Love ya
Still in the work,
ROZ