Maybe I am wrong but I would try to avoid using your image editors default filters because so many people use them they have become very overused. I am referring to the knight, it seems as though you have used a combination of perhaps poster edges and photocopy and for me personally, it's too "seen it before". Maybe try using subtle overlays on the base picture rather than generic filters.
Textually, I would too change the colour of the font, and give it a few adjustments, such as a stroke or a very slight bevel to emphasis it a little more against a dark background.
Are the paint stroke patterns supposed to represent something? they don't look bad, just a little out of place... I like how you have used it as a tearing effect in the top right though.