Arise: A simple story

Memory 1 - near the start, hop onto the flower and ride it to the green lily pad. You’ll see the memory in the distance on the left. Ride the second flower over to it.

Memory 2 - when you’ve just ridden down a short waterfall on a flower, you’ll reach a wide area filled with green lily pads. The memory is on the right under a tree. Work your way across the pads to the massive one in the centre. You’ll need to be quick to dash from here over the two smaller pads to the tree, as the pads sink after a while.

Memory 3 - when you get to the part where you can ride the magic tracks of pollen, one will take you through a gap in a tree trunk. Shortly after, you’ll be able to freeze time to drop out of it and catch another track below it. Rewind time until you reach an island. Then cross the three lily pads to another island where the memory is.

Memory 4 - shortly after memory 3, you’ll ride a pollen track that will do a vertical loop. Wee! At the top of the loop, freeze time and pass through the memory on the way down.

Memory 5 - when you reach the large waterfall with loads of big flowers, take the lone purple one. When you pass a small island, hop off. Then get on the red flower that goes past it. Rewind time all the way and it’ll deliver you to the memory. Note: as SpiritedSojourn points out in the comments, you can also stand on a fuchsia flower that's quite far to the right, rather than the purple one. That will make sure you don't void the 'Purple hater' achievement.