How do technical issues affect your characters? Do your magical characters find they powers dip in "bad reception" areas or find that a certain wand works to its best potential when used in certain conditions only?
What machines does the world you've created used and who services and maintains these? What happens if the machines take on a life of their own and no longer want to be controlled by mere humanoids?
Re technical issues as a writer. I would always say write first, edit later and if grammar, spelling etc are not strong points, see if you can find a writing buddy who can help on this. You return the favour by reading their work and bringing your perspective to it.