Hrm... I can't see it. Looks semi-normal to me (with some weathering in general already in place).
If you want worn spots, I can offer a suggest that works great. I've used this on some of my LW planes but it takes a but more time. Create a new layer. For this paint scheme I'd take white as the color. Pick a relatively large brush (wish very soft edges) and with 100% opacity of the brush free-hand inside the margins of the darker of your colors. Fill in the middle and generally try to match the edges, only stay away from them. Then pick black, create a new layer, and do the same for your light color.
The premise is that dark colors will start to lighten over time, and light colors will start to fade. Now play with the opacity and blening of each layer. I found usually less than 10% was good but I had darker colors. With these lighter colors I'd say try copying what you did with "black" but do it in white. Toggle black on and white off (and vice versa) and see which looks better.
It should look like the paint is fading from the outside in, almost, and I've got some good effects this way.
