Thank you Chris, I now managed to switch my wordpress sites.
Maybe I can help other wordpress users, I wrote a manual which can be found below, as it takes a bit more to switch than just the .htaccess mod.
http://mayak-arthouse.com/webdesign/ssl-security-on-wordpress-switch-to-https/
I activated the SSL yesterday for my domain handmadeineurope.com, but do not see the https or green padlock yet.
Is there anything else I should be doing? Modify the acces file or redirect to https?
When I type https before the domain I get errors of mixed content, or the 'Site unavalaible'...