Will_Heath

First.... if you're not quite ready to give up on this learning experience yet...

at the base of the tree, right under where the trunk flares out and upward, right at the soil line, scrape the bark down in 4-6 places and dust with rooting hormone. you are not girdling the trunk here, you are taking the bark off in narrow strips around the trunk keeping in mind that this is where you want roots to form. I I I

Then take a 3" or 4" plastic nursery pot and cut off the top 3" so you have a ring, then cut the ring in one place. That that ring and set it around your trunk, right on the soil and push it in about inch into the soil.

Now put some soil in, your choice, some people use straight sphagnum moss, some regular bonsai soil, I personally use 1 part turface, 1 part sphagnum moss and 1 part aquarium sand for this technique.

With luck and time the tree will shoot out new roots in a more pleasing manner and solve your reverse taper problem as well.

Meanwhile, stop the elongating and don't forget to pinch back those candles.

Just another option....

Will

Edit: On another note, that moss looks healthy on that pine, that would tell me that you are watering too much.