Lorenza Hallahan on Instagram: "How to draft a petal sleeve 🌸🪡💕 . Trace off the top half of sleeve pattern. . Mark the notches, centre, front and back of the sleeve . Draw a line down the centre of the sleeve. . Mark 3.5inches/ 9cm from the centre towards the front. . Mark 5inches/ 12cm down the centre. . Mark 2inches/ 5cm down the underarm. . Match up all those markings with a french ruler or by freehand. . That is the back petal sleeve done. . Now to make the front petal sleeve, trace…