How to migrate from Drupal 7 into Drupal 8 with Evolve theme

Hi expert,

I adopted a website which uses Evolve Drupal 7 theme for a while and likes to upgrade into Drupal 8. Luckily you have the Drupal 8 theme available. Do you have the instruction how to do the migration? I used migration modules from Drupal 8 core. But it did not do a good job for me. Http://complateautocarehouton.com (Drupal 7) vs. Http://drup8.completeautocarehouston.com (Drupal 8). I plan to use "the tried-and-true copy-and-paste by hand method" next. Do you have instruction for migration from Drupal 7 to Drupal 8 with your Evolve theme? The apperance setting is so much diffference between Drupal 7 and Drupal 8. Any clues and tricks will really be appreciated.

Thanks,

Nicol