Sorry I did look at your link originally but I have a navy blazer in my wardrobe and I rarely wear it, it's classic clothing but I'm not a classic dresser - what was I thinking!
When I do wear it I go for boyfriend/slouchy t shirt with scarf, but what you choose will depends on your ** colours, your shape and the occasion.
Why don't you join us on the HOC Autumn thread, there's lots of good advice and plenty of links to give some inspiration, to the sometimes daunting task of renewing your wardrobe.