Here is my two cents of advice.
1- All work together except the orange/ brown plaid in the bottom stack, and the orangey floral in the top one. I would stick with navy-red-tan.
2- Since you are making it for a teenage guy, no florals. Generally they really don’t like flowers in their bedding, decor or otherwise.
3- I Agree with others the sets need a solid or tone on tone to settle down the plaids-