Is yours number 9? If so you're looking at £50k more than you paid around peak in 2008. It might be worth adding into the description the improvements you've made since then to ensure people aren't put off by the hike in price.
The most recent sale on the road was your buying that house which makes it more difficult to know what it's value is today. The other most recent sales were:
15 Ferne Furlong, Olney, Milton Keynes MK46 5EN
£392,000 Detached, Freehold 14 Nov 2007
7 Ferne Furlong, Olney, Milton Keynes MK46 5EN
£363,500 Detached, Freehold 12 Dec 2006
Are they similar/bigger/smaller than yours? That might give you a price indicator.
I've tried to find similar sales in the neighbourhood.
This one sold for £358k in Jan this year.
This 6 bed sold for £425k in Nov last year.
Hope that helps. I'm sure rugs/flowers/twigs/curtains etc can help, but the fundamental is ensuring you have the right price.