Plaster casts of garden flowers

Well the first couple of plaster casts have come out well...following on from yesterday I have found that using my frame and lining it with sellotape works - I just unscrew two of the corner screws a little and the cast pops out - for the frame - with an inside aperture of 17 x 12 cm, I used 250 g of plaster of Paris and half that of water. Now to investigate strengthening the plaster with PVA or cement. This project is great as I can keep reusing the same lump of clay too!