Oh, that last bit, the right edge triangle. It sounds a little tricksy at the end, but it’s not hard. Just keep following the directions, to the end, which is a slightly tricky part. Here’s a video for you:
Then it’s on to Tier 3, which is a piece of cake! 🍰
When you’re finishing Tier 4, with another right edge triangle, picking up the last stitch can be a little tricky. I like to pick up here, in the outside of the first V on the outside edge, so the corner of the triangle doesn’t stick out as a bump on the lovely straight edge.
Now it’s just a matter of knitting away and watching your colors change. Have fun!
You can find the Minerva pattern here on Ravelry. Come knit with me!
If you’re on Ravelry, please make a project page for your Minerva; I’d love to see them there. Ravelry makes it so easy to find them all together. And post on Instagram using #minervakal2020 and #pdxknitterati too. I love seeing your progress.
Just keep knitting…
Edited to add:
All Minerva KAL 2020 posts:
Introducing Minerva Entrelac Cowl/Scarf and KAL
Minerva KAL: Choosing your yarn
Minerva KAL: Casting On
Minerva KAL: Base Triangles
Minerva KAL: Tier 2
Minerva KAL: Finishing Tier 2
PDXKnitterati 
Pingback: Minerva KAL: Tier 2 | PDXKnitterati
Pingback: Minerva KAL: Base Triangles! | PDXKnitterati
Pingback: Minerva Entrelac KAL: Casting on | PDXKnitterati
Pingback: Minerva KAL: Choosing your yarn | PDXKnitterati
Pingback: Introducing: Minerva Entrelac Cowl/Scarf and KAL | PDXKnitterati
Pingback: How’s your Minerva KAL progress? | PDXKnitterati
Pingback: Minerva KAL home stretch status check | PDXKnitterati