I work full-time and only have time on the weekends to oil paint. Can I break down the steps in painting a larger canvas over two or three weekends? I have a 12" w x 36" h canvas. I plan on painting a vase and flower on one weekend and the next one, the background. Is this doable in regards to reworking the oil paint a week later? If not, what is the best approach? What is the process for large oil paintings that cannot be done in one sitting. I appreciate any help.