Every builder in the area has fresh-baked chocolate chip cookies in the oven. They are very aware of this trick.
Leave the patio for someone else. Put matching towels in the bath areas. Avoid spiced candles or poperee (sp?). These odors can actually be a turn-off. DO NOT leave lighted candles around. They don't help and are a fire hazard.
Fresh paint, an airy smell (no PET ODORS) and a 1 year home warranty (cost is appx $500) along with a well-maintained yard goes a long way. If you're planning to sell your home in the winter months, rye grass or a well-seeded fescue that stays green in the winter makes the home more attractive. Avoid high-maintenance lawn issues (very extensive landscaping, etc). If you don't have a sprinkler system, you might look at one of those (again, you can do that yourself).
Finally, pay for a home inspector to come out and do a report on your home. That way, you can take care of any items. You will also have an inspectors report available for the prospective buyer.
One other issue. I don't know about your market, but you are talking 12 months, which will be December/January. That is the SLOWEST time of our market. I realize that you have certain issues to deal with that will set when you want to put your home on the market. The best time is March-August to sell. Sept-December, the market dies as people don't want to move during that time frame. There is a measurable decline in sales prices during that period as it becomes a buyer's market for those who really need to sell.
Just something to consider.
Roger