I built this larger than the specs given because I wanted it to hold more. 12in shelves with an 8in back just seemed way too small. That would hold a plant or a bowl (as seen in the other brags). This can hold a plant *and* a bowl. If your space can accomodate it, I suggest making this larger.
This has shelves 16in deep and the back is 10in wide. This resulted in a front profile of about 42in across and a side depth of about 30in. I also added two cross members (?) over the shelves to give it a more finished look
Attach the back to the shelves first and then measure the rest from there. The materials list is modified as follows: back = 1x10x6ft, shelves = 2 x 3/4in by 16in by 8ft (will be enough to make all 6 shelves).
Pine back and shelves but I went with fir for the front frame/doors because the fir was much straighter and less prone to warping. It was my first time using a pocket hole jig. You gotta love that thing. The only other tool we used was a jig saw and a nice long straight edge (and a chop saw - helps with accuracy when building the frames).
Total cost of project was around $300 but considering we couldn't find anything like this in any store, and it fit our needs perfectly, it was well worth the time, cost and effort. The pictures don't do it justice.
Thank you Ana! It was just what we were looking for.