I would also put in the advert that you are leaving the country and that the price is negociable (so you have added maybe 500 or so on the price which you can go down on, but the buyer doesn't know this).
When I left Ireland some years ago, my better half had a Fiat Punto 1.2 to sell and there were plenty about at pretty low prices.
I got the car washed, vacuumed and polished up (cost me something like EUR 20 in total), took some killer photos (nice bright day) of both the exterior and interior not cutting any part of the car as it may look like you're trying to hide something. Put it in the local car sale web site at the higher price scale, but only because I added EUR 200 to the price above a similar so I had something to go down on with loosing money.
4 hours later the phone rang and 6 hours later after the initial advert was posted the car was sold with only a EUR 50 down on the original set price. It was even the buyer who offered me EUR 1'550 instead of the EUR 1'600 we were asking (the car was 11 years old at the time, with 99'000 miles on the clock and all the paper work you could think of).
My GF asked him why he picked her Punto and he answered it was the best presented of them all, so there were no surprises when he arrived and all was just as described.
So, my advice is to put a little effort into fixing the car up (doesn't have to cost much) and pricing the car as idefix
recommends and you will be fine... Try and think as you were going to buy the car and be critical
Best of luck...