copying references is a good way to practice, however, the next step is to create something new and different from the reference. use the same techniques, but do it your way.
design something that you haven’t seen yet. you can combine techniques and ideas from different sources, for example, take the story from your own photo, add colour scheme from the other artwork and implement the lighting scheme from the third source. Be observant and capture successful colour and lighting combinations from real life by using your camera. use these photos for your creative work!