I really like this brown one, that obviously became a math notebook (wonder why?) That stamp from the Paperartsy Everything Art -series is just awesome. Also the blue notebook turned out the way I wanted... Well, the gloss gel stars looked gorgeous in milky white before they dried, pity I didn't use molding paste instead!
This yellow one ended up stressing me a bit. There is a layer of gesso under the paints, but it isn't opaque enough and the grey cover distorts the yellow. After stamping the colour wheels I heat embossed some texture with WOW pastel yellow. While heating the first one I realized bright yellow would have been much better... but I already had the pastel all over waiting for heat, so on I went. I random stamped some orange and added the circles with gloss gel. Again it looked fine when wet and milky, but as the gel dried, the pastel embossing was just too light. I used a white Sharpie to colour the gel and balance the palette. Not bad after all! Those colour wheels have a citrus touch to them :)