Wide denim is not a neutral piece. It sets the proportions for everything else you put on, which makes dressing around it easier than people expect: half the decisions are already made.
The hem lands on the shoe, so the shoe carries weight in the outfit. Chunky trainers, skate shoes and boots with some mass all hold up under a stacked hem. Slim minimal sneakers disappear under the fabric and make the leg look like it swallowed them. If you wear slim shoes anyway, cuff once so more of the shoe shows.
Two directions work. Match the volume: an oversized tee or hoodie continues the silhouette and gives you the full 2000s frame. Or cut against it: something fitted or cropped up top makes the leg the single wide element and reads sharper. Both are correct. Splitting the difference with a mid-length, mid-loose top is the one version that looks undecided.
With embroidered and patchwork pairs, the leg is already the statement. One plain colour above the waist, no graphics. Let the pair do the work you bought it for.
First: hemming wide jeans to "correct" length. A wide leg that ends neatly at the ankle bone looks like a tailoring accident. Leave the length, let it stack.
Second: burying the waistband. Wide legs with a long untucked shirt over the waist turns the outfit into a single shapeless column. Show the waistband at least sometimes: tuck, half-tuck, or a shorter top.
If the pair fits, the belt is decoration. Wear one for the buckle, not to hold the jeans up. If the belt is doing structural work, go back to the size chart before you go back out.