Welcome Günter!

That's a good looking kilt (the white stripe at the selfedge is odd though) and you wear it like you're a natural kiltwearer...confident. Very nice!

About wearing a sporran and other kilt accessoires....do as you please, but don't worry about what other people think.
Whatever you do...people will think it's Scottish anyway. Can't blame 'em of course.

I'm Dutch...I live in the Netherlands and I often hear: "oh...look..a Scotsman!" with or without sporran...c'est la vie.

Enjoy!