A useful oil painting tip for beginners:
Have you ever encountered the problem, when oil painting, of your paintings losing the initial fresh colour and vibrancy they had when the paint first went on?
This is often due to the canvas absorbing the oil from the paint leaving it dull and flat.
If you don’t like the idea of using rabbit-skin glue then you can do the following:
Buy cheap commercial canvas and cover it liberally with acrylic paint. Even though they usually come primed with acrylic, these are normally very thin washes and the oil from the paint gets absorbed by the canvas anyway. Covering it with more acrylic helps to stop this absorption and will keep your paintings vivid and glossy just like when the paint first goes on.