It is almost comical when it comes to suggestions on how to improve a photograph, the most common answers are - use a sharper lens, use a certain magical camera feature, use bokeh or add some mystical LUTs, filters or film simulation effect. Most of the times, these tricks do not even work. Instead of focusing on what you can do with your cameras, lenses or even editing skills, why not pay more attention to the subject and see if you can improve the following: lighting, background, composition. Even a single change of background can drastically improve an otherwise, failed, boring shot. An example shown in the cup of coffee here. 

The improved shot - find a darker background so the white cup pops out