Master masterpieces of old masters
This is something which can be regarded in many ways: but most importantly what it means is that you need to observe the work of the famous painters (you will later on choose your own favorites) and learn from them. It would be so easy to suggest you to just go ahead and try to copy someone’s work. But what we would rather say is to simply try and learn from them. See how they do their things, how they draw, how they paint , notice the technique and try to apply a similar technique for your own drawings or paintings to simply see where you go with it, what your imperfections are and where you should put in more work in order to get better.
If you check out the older paintings, you will learn that many of the old time painters were painting the way they did, on the type of canvas they choose and with the paint they could get or even create, however no matter how hard you try, yours will not look the same, simply because it’s a different time, different canvas and different material you work with.