Level Design - Blockout (Unreal Engine 5)
Using my designs from my new sketches (See Level Design - New Sketches) i started with the first step of my level, creating the layout The First Step of The Blockout:
For my blockout, i started by using the Cube grid tool in Unreal Engine 5's Modelling Mode and made an L shape layout and added in rooms which can be seen below
For this, i created a basic outline based of off my new sketches The Modelling and Detail Phase:
For the modelling stage, i started with the player's start location and added it in a broken part of the building which has a broken roof which doubles as a small staircase up to the floor above. (see image below)
I then added a one way valve which forces the player to be kicked out of the starting area (see above image near checkpoint)
The Main Corridor:
For the main corridor of the level i added two small rooms before getting to the platform sequence in order to diverse the level a bit and i then added locked room by the platform stage as well as a storage room on the right, just before the platform sequence
The corridor before adding the details 
The corridor with details The Storage Room:
I added a small storage which contains a few crates as well as a key to the locked door by the platform sequence in the great hall
The key is hidden behind the crates to try and push the player to explore The Platform Sequence:
At the end of the great hall and added a small platform sequence seen below
The End Sequence:
After the player has used the small platforms to traverse to end, the player will find a door that they can access to reach the end of the level
The End.
That concludes everything i have made for this 3D Blockout however i have added a small video at the end of this post which contains a walkthrough of the level