You are now familiar with Qt Quick's capabilities that allow you to add astonishing graphical effects to your games. You can configure particle systems and implement OpenGL painting in the Qt Quick's scene graph. You are also able to utilize the skills acquired in the first parts of the book to implement painted Qt Quick items.
Of course, Qt Quick is much richer than all this, but we had to stop somewhere. The set of skills we have hopefully passed on to you should be enough to develop many great games. However, many of the elements have more properties than we have described here. Whenever you want to extend your skills, you can check the reference manual to see whether the element type has more interesting attributes. Qt Quick is still in active development, so it's a good idea to go through the changelogs of the recent Qt versions to see the new features...