I use Tweme 1.0-beta in my site. Please, can You explain me - step by step, if possible, how can I update it to latest version considering that I'm newbie and made such mistakes as:
1. I modified style.css file
2. I modified core templates and added new

I tried to update Tweme with renaming it (just renamed all 'tweme' fragments in files to 'mytheme') and after I put my style.css file and included it in tweme.info. I also put all my tpl files replaced core ones.