For the sketch and background parts, I only have a sped-up version record from Clipstudio, because for some reason I feel uneasy when I record those parts where I am still really bad with Streamlabs xD
Brushes in Clip Studio download link: https://drive.google.com/drive/folders/1hA3isA7fEczVQCiTr3L2zaT1mgIqk9SZ