As the daughter of a Mason, I'm here to cheer you on
and will look forward to seeing your quilt when completed.
Sorry, that I can't help you with patterns and such.
Some suggestions ...
There are some good line drawings online that you could work with.
Let your printer/copier be your friend for enlarging to the size you want.
Or if you need it bigger, take it to a print shop that can do it larger.
Another possibility would be to print on fabric sheets.
Not as nice as applique, but depending on the look you want, it could turn out quite nice.
Further, you could have fabric printed via Spoonflower or similar.
Paper piecing may be an option for some too.
I know I haven't given you a lot of help, but perhaps it will help get your ideas flowing.