Soft rejection, need improvement advice

wordpress

#1

Hello Everyone, Once again I submitted my another WordPress theme here:
http://themes.webmasterdriver.net/dexi/

Few days back I got soft rejection “Sorry to say, but theme is not yet ready to be included
in WordPress category. Design needs lots of improvements and because of that I am unable to provide any specific details. Please improve your theme and feel free to resubmit once ready.”

Now I need some feedback so that I can resubmit my theme and get approve here. Any suggestion what improvements I need? Would really appreciated your help or suggestions. Thanks in advance!