Decoden Newb

So I'm a total newb to deco. I'm sure I can do it. I just fear I'll spill an entire container of stones, get pissed off and go for a bottle of Jack and watch TV. I bought a new case for my iPhone to use as my first base. It is simple: hot pink and black zebra print with a hole for the Apple logo to show. When I work on it, I want to leave some of the zebra visible.  I think I will use pink stones over the pink parts to give it texture and maybe place a black and white stone skull in the middle with a bow.

That project aside, I know for certain that I will do some of these deco projects: