I created a macro in world machine that takes in a polygon and outputs an island similar to this example, however the island shape matches the shape that you input.

This is an example island that I made, and a lot of people have been wanting the download link so here it is.

Purchase the macro to generate these islands yourself here ➤ app.gumroad.com/evmanz#EdwXp

I am open for commissions so if you want to purchase custom terrain just add me on discord at Evmanz#1091 and send me a message.

Also check out my twitter for more frequent updates on what I'm up to https://twitter.com/Evmanz1

Visit my YouTube channel for Minecraft / terraforming related videos and cinematics! ➤https://www.youtube.com/channel/UCGfLy5pzAaXeMPKrysS4feg