Design of covers for two paperback books

The books are part of a series involving the same main characters and are set in France. The covers should therefore clearly indicate that the books are from the same "stable". I shall be using Lightning Source for the POD work and so anyone bidding for this work should be familiar with their technical requirements. I shall be able to provide templates (including bar codes) supplied by LS as well as all the textual material for the cover. I should like to discuss with the successful bidder the question of sourcing/providing any photographic material. I shall be able to give a feel for the sort of style which I am looking for by referring to existing published books viewable on, say, Amazon.