For picnic app(sky filter app) artwork.
Android https://play.google.com/store/apps/details?id=com.estsoft.picnic
iOS https://itunes.apple.com/kr/app/picnic-%ED%94%BC%ED%81%AC%EB%8B%89-%EB%82%A0%EC%94%A8-%EC%9A%94%EC%A0%95-%EC%B9%B4%EB%A9%94%EB%9D%BC/id1236058595?mt=8
