Love 1 and 2, those are my fave looks. I can't believe you rescued those pants, they look like brand-new, on trend slouchy tapered trousers! With jacket in #3 it might work better with the neckline opened, to reduce the long torso effect of the top a bit. Or, like you said, it might be the jacket is either a bit too short or the tunic a bit too long. But try the neck opening thing first.
I'm not sure about the skirt outfit, it feels like it needs some structure, which would be provided with tucking. Which would give the whole outfit a more classic vibe, if you are ok with that. Then maybe scrunch those sleeves, leaving the blouse fully buttoned as shown. The way the skirt and sandals work together with the blue of the blouse is so fab. Very J Crew. Now all you need is large glasses and a clutch.
Great blouse in #6 and #7, I like this on you and the length is perfect. Styling idea: tie at the waist and wear with those pants from #1-2 or skirt from #4.
Re: mesh sweater, any and all cami colors are worth experimenting with. I could also see this looking cute with a scarf. This mesh top is made for denim as the green looks very pretty with blue. You could try a blue cami, jeans and a scarf for a casual MOTG look; dressy shoes would be another idea.