Before you start your project, of course, you need to sand, sand, sand. This by far was the most time consuming part of the whole thing. You may want to use a power hand sander... I definitely will for the next time around. 15 blocks is a lot to sand... just saying.
Next, stain the blocks using a darker color stain. You really only need to do the edges because you are going to cover the sides in cute scrapbook paper.
After your stain has dried, cut your scrapbook paper down to size. On this one, I chose to put the same paper on the front and back, then another paper on the 2 sides, and another paper on the top. I think the next time I do it, I'm going to use the same paper on all 4 sides, then a different paper on the top. You can deifnitely do this anyway you want. I like the look of seeing the paper on top that you are using on the sides as well. It brings all the blocks together. (In my opinion.) Be sure not to cover the bottom, you need to write the number of the block on it. Also, because your blocks can be used YEAR ROUND, you probably want to avoid the seasonal paper prints.