Welcome to the forum jkt! We're glad to have you here. Personally, I think you did a fantastic job on the exposure (you just enough ambient in). The pose is a bit awkward (having the elbow so much closer to the lens than the face makes it seem disproportionately bigger. In fact, I thought this was shot at the wider end of your 17-55 until I saw "43mm" (which can cause more distortion in your subject). The pose aside, I think you nailed the bounce flash. It does indeed look like window light--it works perfectly with the scene. Overall, well done!