Awesome stuff, great read. Now I'm in half a mind to ask my parents if they still have a box somewhere with my doodles lol.
Funny you went into architecture. I was mainly drawing bridges, designing huge fly overs spread out all over the floor. My parents thought I was going to be an architect, yet I turned to software development instead.
Too bad most of my early stuff was made on MSX, saved on tapes, MSX and tapes died. Among others I made a pac man version where you can shoot with power ups, a down scrolling space shooter and the beginnings of a text adventure. I've no clue what happened to the sketches unfortunately. Lucky find!
Btw it's never too late to become a programmer ;)