Yeah, these two just didn't fit into the 16x16 grid unfortunately, and making the square tiles smaller would be inconsistent with the rest of the tetrominoes.
Here are 16x16 versions, but one pixel of their black outline is cut off, so if your background isn't black or dark they might look slightly weird:
(right-click and save image as)
I'm glad you like the pack ❤️
Thank you again for making those 16×16 versions! I wanted to share a quick update: I finished and published the JourneyMap resource pack on CurseForge. 🙂
It includes all 1,476 icons from your collection, organized into 19 searchable waypoint categories, with full credit and a link back to your original itch.io page:
Custom 1-Bit Waypoint Icons for JourneyMap - Minecraft Resource Packs - CurseForge
Custom 1-Bit Waypoint Icons for JourneyMap - Minecraft Resource Pack
Mysticdrew, JourneyMap’s developer, also featured it in the JourneyMap Discord’s curated #resource-packs channel.