I believe that text based guides for collectibles that are ordered is somewhat faster. Hope this guide helps you!
Mahthildis Forest Pages: 1, 3, 5, 6, 8
*** Spoiler - click to reveal ***Confession Page #1
Location: After Flying out of the Old Monastery, right as you start “Chapter 3: Into the West”.
After acquiring the ability to fly from the seer, enter Chapter 3 and fly back to the right and keep on gaining altitude until you see the shrine of the Queen of the Night.
There, you will see an old rusty diary page drifting through the winds.
Confession Page #5
Location: Left of starting area, before Tree of Thrones.
You need to net this Confession Page before going into Tree of Thorns through the arched passageway. While you are on the junction, gain some altitude and you will come directly to the old diary page.
Confession #8
Location: Just after exiting the Tree of Thrones.
This Confession Page is hoarded from Tree of Thorns. While you’re playing the chapter, fly right from the Capilli Village signboard and you will come across an enclosed branched area containing the diary page.
Confession Page #3
Location: In the cave, you enter through a well in Capilli Village.
Once you’re done with the puzzle in the Deep Dark Well, head over to the larger side of the cavern, fly upwards, and it will be right next to a dangling spider.
Confession Page #6
Location: Left of Capilli village right before Plains of Rambert
While traversing through Windy Tunnels, head left from the Plains of Rambert and Capilli Village signboard and you will get to a wind spout.
From this point forth, fly upwards and you will net the Confession Page.
Plains of Rambert Pages: 2, 7, 9
*** Spoiler - click to reveal ***Confession Page #7
Location: Near where Norah joins your party in Windwheels.
While you’re roaming the Windwheels, you need to cross the first Windwheel Tower and speak with Norah under the broken bridge.
After that, head left and you will get straight to the Confession Page.
Confession Page #2
Location: Same as above. Enter the cave at the bottom left of the area.
Keep your eyes peeled on the ground near the second Windwheel Tower and stick to the left side to come across Twin Doors.
Go through these doors and into the Treasure Room to claim your diary page.
Confession Page #9
Location: Inside the Magna Golem near the heart.
You need to head inside the central chambers of the Magna’s Vault. Just as you stop seeing his beating heart, head left and grab the diary page.
Cliffs of Eren Pages: 4, 10, 14, 15
*** Spoiler - click to reveal ***Confession Page #15
Location: Just below entering the area where you find Tristis.
This Confession Page can be found drifting near the gateway of floating Temple of the Moon. This area is quite foggy and hinders your vision so it may take some time to spot it.
Confession Page #10
Location: Above the mirror that leads to the Temple of the Moon.
This Confession Page can be spotted directly above the Magic Mirror in Temple of the Moon.
Confession Page #4
Location: After meeting Oengus. Fly up above a tree in Forgotten Tower.
As soon as you reclaim your freedom after escaping from the pesky cage, head left and fly upwards to find it near a large grotesque tree.
Confession Page #14
Location: In the outside area after doing Oengus’ quest.
As soon as you travel through the Magic Mirror with Norah, head left and fly upwards to grab this Confession Page.
Cynbel Sea Pages: 11, 12, 13, 16
*** Spoiler - click to reveal ***Confession Page #11
Location: Just to the right of Piscean Village. Head to the shrine thing and fly up and a little to the right.
At the entrance of the Cynbel Sea, you need to levitate up in the air to find this Confession Page.
Confession Page #13
Location: In The Gate of the Sun “crystal cavern” area
As soon as you enter the Palace of the Sun, head over to your left and you will come across four falls. Among the three falls that are aligned together will be a Confession Page.
Confession Page #16
Location: Just to the left of the previous one at boss fight location.
While you are in the Palace of the Sun, look for this Confession Page in the area where the mini-boss fight occurs.
Confession Page #12
Location: In the Temple of the Sun, where Nox flies off. Hard to miss.
After completing the Eclipse Puzzle in the Palace of the Sun, head inside the Poisoned Chamber to reunite with Norah and net this Confession Page.