Please do no post any original designs you have for minifig accessories or sketches of how you think a real-life item could be translated into a minifig accessory. Posting these types of designs puts Will in a difficult position in regards to intellectual property rights because if he were to use a similar idea for a BrickArms accessory, a case could be made that the designs were your idea. This is a serious issue Will wishes to avoid, and members not posting mock-ups or sketches for designs helps to avoid it entirely.
It's not that Will wouldn't like your input; it's just best for everyone that Will produce only designs that entirely his own work. Based on the quality and detail of BrickArms accessories thus far, it's a system what works just fine! Trust in Will to handle the designing of any future BrickArms accessories with the same skill and eye for detail that he's brought to creating all the current excellent accessories currently part of the BrickArms line-up