Another spoonflower print

I am preparing another pattern for spoonflower, though I think the dimensions are a bit troublesome with their software. I am unhappy that there are white lines showing up when it tiles.

Here's one tile:

Here it is tiling correctly in the gimp:
 

But it doesn't look right here. See around 2 inches down, there's a tiny gap? I'll have to rework it tomorrow.