Your exterior paint should be perfect.  Consider the value of a quick touch-up coat.

Keep your grass cut, hedges, walkways and shrubs trimmed and clean.

In season, have flowers cultivated and blooming.

Always have your home neat and tidy.

"Thin out" your furniture - fewer items give rooms a feeling of increased size.

Pack non-essentials.  You'll be removing some unnecessary clutter, while getting some of your packing out of the way early.

Hold a garage sale for items you don't plan to take with you; or give them away to a charitable organization and keep records for tax deductions.

Give special attention to kitchen and bathrooms - these rooms sell more homes than any other feature.

Windows should be sparkling clean, walls unmarred.

Keep your garage and basement dry and tidy.  Leaky basements are a sure hitch in any sale.

Fix leaky faucets, loose doorknobs, stuck drawers and warped cabinet doors.

Repair any cracks in plaster and paint.

Keep all rooms clean, bright and neatly arranged.  Turn on lights in dark rooms and raise the shades.

Be aware of odors - they very seriously influence buyers.  Be cautious of smells from cooking, smoke, pets or baby's room.  The aroma of coffee perking, a hot apple pie or perfume in the bedroom, however is very pleasing.