These are easy things to do.
Just ask your customer what he thinks of your work. If you get ‘great’ or ‘super’ or something like that, celebrate!
Any other response? Just work backwards and trace the work steps (output -input), to the extent that you have some influence. Answer the question -what needs to change to get a ‘wow’? You will get some ideas. Now, get help. Implement.
You just improved a process. Wonder why almost no one does it!