In total, it doesn't matter overall where you put it because it will all be deducted from your income. Typically, an artist/photographer would not really have a costs of goods sold but would simply expense the materials they used. Cost of Goods sold is typically thought of far say a shirt. The cost of goods sold would be the fabric and the labor only for the person who directly made the shirt.
The cost of goods would not include the labor for the designers, the boxes the shirts are shipped in or the advertising expenses.
I would not consider a service a "cost of good" rather just a regular expense (be it advertising or just a miscellaneous expense).
The just married sign would be a basic material/supply expense since you'll probably use it over and over again.
