Here are some tips:
Strokes need to be softer,
Try and draw without looking or copying,
Sword is out of perspective, it's leaned to much to the front,
Work on the shading and tonning, it's unshapely,
You need to learn how the light falls on objects to create the correct shades,
Play around with colors,
Try and do more realistic and easy shappes to learn how to shade,
Put up a bowl with oranges or apples, whatever and shine direct light on them in a dark place, then look at how the light falls,
If you practice on easy realistic objects it will make it easier to draw these kinds of things,
Avoid copying at all cost, it destroys imagination and perception,
Draw from your head.
This is not criticism! I'm just giving pointers.
