Hello. Developer would like to go an extra mile and do his homework before being accepted or declined.
This does not break any Freelancer rules because the homework hosted on contactless site, has a protection key, so cannot be used in product. This way developer and buyer will see "almost ready" product and be sure each one gets exactly what they want.
No specification is exact in the field of art, and homework is an indispensable tool to narrow down differences in tastes and misunderstanding. If declined, the developer is still awarded with a sweat and buyer - with matured specs.
Will be a pleasure to show already working demo.