It's tough to dress for warm autumn. When it's cold you know the drill, big scarves, nice boots and skinny jeans, but warmer weather will make you sweat in your favourite autumn outfit. 
In those situations I wear outfits like this. Simple skirt and shirt and your best friend in undefined weather-denim jacket. 
These shoes are surprisingly comfortable and you can actually walk in them. They didn't even give me blisters which is amazing, I usually get blisters from any new pair of shoes I didn't break in. 

Skirt-from Jennyfer store in Paris, my sister bought it an later gave it to me
Shirt-vintage silk shirt
Shoes-Asos spring break heels
Silver rings I've had for ages