Thanks everyone the painting is on canvas on some sort of softwood frame - looks likes pine the + in the centre of the canvas frame has bowed out (convex) and seems to be under a bit of pressure - when I press it in the middle the whole thing goes back into shape - so corner triangles would help if I could do something to the middle as well - water and weights it is and hopefully I can bake it in the sun into it's original shape we had a sudden drop in temp and an increase in humidity after weeks of dry hot weather which may be to blame anyway here goes :)
YAY FIXED IT TOOK OUT THE + PIECE ALTOGETHER AND PUT MASONITE CORNERS ON THE EXTERNAL FRAME - LUCKILY IT BOWED OUTWARDS BIT TRICKY CUTTING IT OUT BUT IT IS FIXED
POST A PICCY LATER WHEN I GET A CHANCE . . . THANKS ALL :) AGAIN
ta muchly everyone
I got to keep the cats away as well as soon as you put anything like a canvas on the floor around here one can guarrantee a cat will want to sit on it!!!