1, learn the principle of painting, because painting requires a certain understanding of spatial imagination.
2. Pay more attention to the real thing at hand, and look up and down from front, back, left and right when you get it.
3. Increase your hands-on ability. If you see something you don't have, you can take it apart and look at the internal structure to increase your impression of all the items.
4, this method is my own use, that is, I like to turn off the lights at night, let the room fall into darkness, turn on light music, not too loud, let my thoughts dance slowly, which is also a help to your spatial imagination.
Go out and see the world more, especially the beach and the empty playground, because they will slowly open the door of your imagination.
These are some suggestions. Imagination is not easy, step by step, and it won't take long to solve it.