Need assistance for developing drupal 8 theme that will meet theme forest quality standard

I am new in envato themeforest. recently I submitted the drupal 8 theme for approval but my theme has been rejected, the message is “unfortunately we found it isn’t at the quality standard required to move forward, and you won’t be able to re-submit this item again”.

I could not understand how to develop my quality standard. please need your assistance if possible help me.