For your mosaic campaign it is better to have the automated response come from your account. This allows the users to relate and respond back to you.
Change settings so automated twitter replies are from your account
Increase your followers by giving away prizes
LiveSign provides the feature that allows you to give away prizes through your mosaic campaign. Through this feature the users would require to be following your twitter account so that they would receive the direct message that contains the link to claim the prize. This link would take them to a landing page on LiveSign.com and would allow the users to enter their details to claim the prize.

