They are intended to be small, since they are tileable. Subtle patterns is intended for webdesign, where if you add the texture to the website (or journal skin), it automatically fills the entire section you want with it. If you intend to use it for art, you'll have to manually tile the textures together to create a bigger one.
This journal skin is really good! Though I think roundingthe white edges of the box would make it look better, and a bit of shadowing would look good, too! But, overall, you did a splendid job on this, congrats on the DD!