From a print by Ohara Koson (1877 – 1945). See discussion.
The kanji word below is hakubai (white plum blossom) for those who want to practice their calligraphy. FYI, each of these kanji characters have meanings by themselves. The first character by itself is shiro (white), and the bottom character is ume (plum).
These first two sketches provide guidance for how to do ume paintings. The first one focuses on how to paint blossoms, along with the calyx.
The next sketch shows ume twigs, branches, and trunks.
Here is a relatively simple ume sketch for practice. This sketch doesn't look realistic, but it is from a real subject that got twisted like that because of a wind storm.
Step 3 below calls for making the paper wet in the part of the vase holding the plum branch. The idea is that when you later paint the plum branch in the vase, it will get a blurry look. The amount of water to use depends on how absorbent the paper is and how long it takes you to get to step 5. This is something you need to experiment with.