I’m surprised at the things a stylist found for you last year - the trousers in particular, as they weren’t a fashionable shape last year, or this.
And no, cos-playing Pru Leith would not make you look vaguely cool! (She looks fine but that’s her.)
Tbh I would never have started with Whistles and Hobbs - they don’t tend to embrace the current oversized, louche look in jackets and trousers. I would browse sites like
& Other Stories
Arket
Cos
Massimo Dutti
as well as, for inspiration (rather than buying)
The Frankie Shop
Rohe
Studio Nicholson
Toteme
to get an idea of new proportions. Then perhaps consider getting some new trousers to wear with the jacket. And a good plain top - cotton, silk or lightweight wool to wear underneath. No pattern, no frills … And absolutely no ‘statement jewellery’. Just restrained pieces you might ordinarily wear. Observe the styling on all the sites above.