Outfit #66 - How do you wear a denim shirt?

I bought a denim shirt at Uniqlo when i was in London and i LOVE it. It fits well, it's comfortable, and i do like the aesthetic of it. But it's proving to be a bit difficult to work into my wardrobe. I think that it may be partly to do with the dark wash, since I wear a fair bit of navy and black and maybe it clashes a little bit. I may also need to get over my obsession with tucking everything in. I think the outfit below worked okay, but I could use a few suggestions.