Agreed, the art you used as reference had more detailed shapes then the model you made. You do have the dedication to model so I would advise to follow some tutorials, the one posted above seems really good Im going to try that tutorial as well.
It's extremely blocky and not very appealing to look at. When you speed model, you get better at speed modeling, not making better models which is what you should be doing. You definitely have the willpower to sit down and record these videos. You should put that energy into modeling something complex and focus on making…