It might be the angle, but I would readjust how the top is tucked in so it doesn't balloon out like that. If it doesn't make the shirt too showy, maybe undo one more button. I like it overall, though. Hope your first day went well!
I like the idea of it, but it looks like you're swimming in it.How about pairing that with a high waisted pencil skirt instead to show off your shape more?