I’m stuck too but not on the same ones as you.
Think another word for ‘smart’ - it’s 3 letters and wrap it round an art gallery that has several incarnations. The ‘modern’ one has a Turbine Hall... Means majestically.
8d is to do with a constituent of cheese ‘raised’ and is an amount of money.
16d is a deadly condition resulting from a wound. Another word for group followed by the name of a Frenchman.