Welcome to the fun world of using a light tent/box to take photos! Without seeing what the "before" photos looked like vs. what you've shown here, it's difficult to say how much it has improved from a relative standpoint. Some have given you suggestions already in terms of light sources and positioning, using different color backgrounds can also make a difference. Since monitors and PC settings will vary, only you can truly judge if it's an accurate representation of the "model in hand".
Having said all of that, the photo you've provided looks good, has good depth of field and focus, and shows the details nicely for a small scale subject. Play around with your white balance settings if you find that the color saturation or representation is off but on my monitor it looks good.