This sounds like a very interesting project that I would like to work on, but unfortunately the payment is not guaranteed. Making the payment guaranteed will draw higher quality designers giving you a better chance at receiving more quality submissions. If you decide to guarantee the payment please let me know.

This captured my attention since I am a Christian too and I design various materials for church activities. T-shirt designs are one of those. Would like to give it a shot despite the no guarantee on payment. I'd like to believe I could trust you enough. :)