As asked - Does this look okay? Honestly - for school.
We have a big event at our school, and we need to wear skirts, or dresses - and I honestly don't own any dresses, and this is the only skirt. I don't have a lot of clothes - Actually I have a few basic tops, one cardigan, a few plaid shirts, two pairs of black pants, that skirt - and I only have these shoes at the moment.
Put on the flannel and tuck it into the skirt but tug on the edges so they poof a little over the edge but are still tucked in. OR if you really need to wear nirvana, remove the flannel but still pull all but the bottom of the shirt out so it poofs over the edge of your skirt
In my opinion, it would look better without the plaid blouse. Taking off the plaid blouse would help avoid the outfit from looking over the top and it'll make it a little more simple. This is my personal advice. If you love that plaid blouse combined with the outfit, then go for it :)