Ok, I know I'm a traditionalist - but I think this might work better with a contemporary kilt - but not so much with a tartan kilt.

This next part is just MY opinion... you might want to hike that kilt up a bit and look for a wider belt. I don't mean to sound so negative but to my eye tartan kilts look better higher (I prefer top of knee) and a wider belt seems to be the right "scale" for a manly garment like a kilt.