In order to upload a locally developed site you have to follow these steps:

1. Adjust all absolute paths / configuration files to the new environment;

2. Upload your files using ftp. For more details follow this link;

3. Export / Import your mysql databases. For more details follow this link.

In case you have troubles following the above steps you can order Siteground's Development services:

https://www.siteground.com/support/showform.php?subtopic=60