Arms expending their volume were ripping armholes of your shirt. Also, there were countless azure feathers growing to make your arms to a pair of wings. Arms got flatter, hands lumped fingers and eventually made base for feathers settle to fly.
They were much bigger than the arms you once had. Those seemed massive, being about 3 and a half feet. Feathers on the tip of the wings would be dragged if you fully stretch your arms down. Reasonablly, it should be bigger to make human, who usually havier than flying birds, to fly.
"How...?" You gasped in shock. "I, I got wings..."
And it was not proper thing expected. Surely the wish coming true is afar from expectation, but losing hands was worse. Maybe you could make another wish to make the situatuon better? At least it seemed to be change was ended...