Design an Advertisement

We have a product due to launch soon, it is a range or jewellery, 10 pieces, but the idea is that the customer can request alterations to the design and make it their own. This image will be displayed on the jewellery stand which will go in the shop front. The job will be to take the renders that we supply, which consist of the master design and then 4 other design options which show how the master ring can be changed as an example. All renders are supplied in the correct orientation and are PNG format. All we need is for the master design to look like exactly that, and the 4 other designs to look like offspring ideas. We were thinking of having the master design bigger and centred above the other four example pieces, due to the render orientation this seems to be the only workable way. 1. We would like a reflection off a base where the 4 offspring pieces are are. 2. We would like it to be dramatic but not offensive 3. There is not brand name, but there might be a logo to discretely into one of the corners. 4. We what the rings to look as real as possible, like a true photograph, so maybe as a solar flare of slight sparkle to the diamonds, but without it looking ott and trashy 5. Size can only be confirmed on Tuesday 14th July, but is about 20cm x 20cm 6. Possibly fresh, but possibly dark...