The difficult part in searching the mistakes is that you have to wait till the painting gets dried up as damages will take time to appear. Cracking can occur if the painting takes longer time to dry. Sinking is one of the most destructive and common effects you can see in an improper oil painting. This happens when the oil from the paint evaporates too fast and makes the layer sink into the above layer. You require oiling out, which is a process to rectify this defect. It doesn’t create only cracking on the painting surface, but also generates blotchy and uneven finishing on the painting.

The main reason of a dull finish in the painting is the improper ratio of drying oils in paint and solvents. Generally, it happens when the amount of solvent is more in the painting. Make sure to use prime oil paint for avoiding this kind of sinking effect in your art work. The good news is that the oiling out process is available to regain the sheen of your painting surface. In this process, all the mediums like in-seed oil, are rubbed on the dull areas. If you apply this process gently, then you will surely get the sheen on the surface of your painting once again.

Cracking is one of the defects you generally find in oil paintings. This defect occurs because the bottom layer of the painting contains more drying oil as compared to the top layer. In case the top layer contains too many solvents then it will dry very fast and become more brittle than bottom layer. To avoid this defect make sure you apply the paint properly on all the layers and give proper time to them to dry.