I'm looking into building ATA style rack cases for all of my guitar equipment.

Do you have any advice for building a case like this:

And one like this:

Any help you have would amazing!
My father is a carpenter, we've built many things in the past.
Mesa Triple Rectifier---Bogner/Line6 SpiderValve---Orange PPC 4x12

Alesis MidiVerb4--BBE SonicMaximizer 442--Ibanez TS9
Boss DD-3--Morley Mark Tremonti Wah

Ibanez ART-100
Ibanez S-470