Is double-faced wool warm enough for winter?

It is warm for its weight because the two wool layers are joined without a lining. It handles cool days and layering well, but it is not a windproof or wet-weather coat. Below freezing, plan on a sweater underneath.

Does the cropped length work on a petite frame?

Yes. The cropped hem sits near the high hip, which visually lengthens the legs, and the gathered waist keeps the shape from swamping a small frame. The wide lapels are the main thing to check if you have narrow shoulders.

How does it fit compared with a tailored blazer?

It is more fitted at the waist and much more voluminous at the sleeves and hem than a blazer. The single hidden button closes cleanly at the front. Size for your bust and waist, since the flare below the waist has room.

Can I wear it with wide hips?

The flared umbrella hem is cut to skim over the hips rather than cling, and the waist gathering draws the eye inward. The trade-off is that the flare adds visual width at the hem, so balance it with slim trousers or bare legs.

How should I clean and store it?

Double-faced wool is usually dry-clean only, and pressing needs care so the two faces do not separate. Hang it on a broad hanger to keep the lapels and shoulders in shape, and brush rather than wash out marks.