Sometimes (and probably most of the time) merely seeing how an effect is achieved will offer no clues as to what it’s like to create that effect for yourself. Copying or mimicking the effect can help, but those moments where it works within your own artwork should be explored the moment they happen.
When these chance moments appear, when you have that ‘a ha!’ moment, be sure to dig deeper. I’ll share with you a recent ‘eureka’ moment I had while working on a t-shirt illustration project for a client.