I will attempt to help too, with pics, as sometimes it's easier to understand.
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1. swap your #1a & 2a pieces.
2. the piece I've numbered as 2b has been cut as a #3, you should have cut 3 of #2 - not 2 of #3.
The white triangle on the end is also on the wrong corner, perhaps because batiks look the same both sides so it's easy to get confused. If you change this, then trim off some of the other end to match #2 size, all should fit.
Hope I've helped.