Well Im 19 so I dont actually have that much time lifes pretty hectic. I work a full time job as an apprentice sheetmetal worker 42hours a week, I train for soccer two times a week, I have a girlfriend who demands alot of time but I just make sure when im customizing I fully imerse myself in it for the few hours I get.
I probably get an hour a day not inuding weekends
Btw I just finished off three more last night ill post them when I can