My advice first - Get good! Lol
Cool gift and I will try to snag a few online resources that may help as far as technique etc and post here later.
On a philosophical note...draw fast and don’t think about how good it is just go, don’t overthink it or worry just get it down on paper. You will look after and notice things you will change in next one. It cost me a lot of time foolishly chasing after “perfection”
I would definitely sketch a lot of squares and basic shapes in perspective...I still sketch squares circles etc.
if I recall from some past drawings you were already under way. Draw draw draw!
I overthink a lot that's why my paintings always end up in a disaster, or at least not the way I expected when I was studying and planning it for days. Surprisingly, when I do alla prima or just random paintings, it always turns out good. So yeah, follow this advice @acidyo :P