Good stuff from Bacchus as always.
My tip: drive the relevant end tyres centrally up onto a couple of bricks before jacking: gives a bit more clearance.
And: safety message: that I'm sure you know anyway, but..... put axle props securely under before getting beneath. Never work under a car supported only by a jack. No matter how much the jack cost.
and chock the wheels you're not jacking up.