I suggest you have the prospective client do a search on "Los Angeles Skyline". Once he falls in love with someone's work, he can contact the artist to see whether something can be worked out. It could be a triptych of three completely different images that look great together. Or maybe the artist can do what Angelina is offering to do and create a larger size (if the piece was created in such a way as to make this possible without a quality compromise). If the potential buyer finds something he or she absolutely loves and the artist is at a loss, maybe you can suggest that the artist come here to the main forum to ask for advice for suggestions on ways to accommodate.