Chrome paint takes a little bit of skill to do well. Australian YouTuber custompaintmods tries applying it with paintbrush, airbrush, and with various primers and topcoats, and the end results compare favorably with real chrome.
One interesting quality of chrome paint is that it looks best applied over glossy black paint. Another is that is goes on dull and starts to get reflective after application.
Other people testing chrome paints suggested spraying with successive very thin layers that dry between applications.
There are also silvering solutions available on the market that add a thin layer of silver that then needs to be covered with a clear coat. This tends to go on very smooth but has to be used as instructed.
Image: YouTube / custompaintmods