File format that you have downloaded is may be a .ZIP file. so need to be extracted. Please Extract / Unzip it.
Look at the top right corner, you will see Backup / Restore button
Manage on pop-up windows and click “choose file” button and look for folder that is created after extracted file that you have downloaded.
Folder may has a .XML file and .TXT file or Internet shortcuts, you should select only XML file.
Click Upload button. Now upload process may appear in your screen.
Now the template will be appear in your blog successfully. Enjoy!
YES! THIS TEMPLATE INSTALLED SUCCESSFULLY!
But, How to Customize?
Post your doubt here with template name.
If you have a ERROR,
Post your question with your blog URL.
You’ll get the sollution for free.