It is a image material of hand-painted roses 手描きのバラの画像素材です
800x600px
Layers with colored but only vector line drawings can also be used.
It is drawn with a thicker outer line and a thinner line.
There is also a material collection that summarizes flower materials
https://assets.clip-studio.com/ja-jp/detail?id=2004798
800x600px
色入りですがベクター線画のみのレイヤーもご利用頂けます。
外周線太め・内側線細めの描画になっています。
花素材をまとめた素材集もあります
https://assets.clip-studio.com/ja-jp/detail?id=2004798