I'm not sure what constitutes a perfect parent, I think we all go into it blind, although my husband was a bit of a guiding light as he already had children.
There were two things I swore I wouldn't do before I had children and I stuck to that. One was, never to make them to eat anything they really couldn't stomach, My junior school years were blighted by lumpy substances we were forced to ingest, literally, till we vomited, same with the school milk, which I hate to this day. Unfortunately the "Milk Snatcher" had yet to arrive
The other was to go easy on religion, so were that to figure in their lives, they could make an informed choice when adult enough to understand what it is they are making a commitment to. I was brought up a Catholic and I had too much of it, both at home and at school.
Of course unconditional love. When they are very young, I'd say read a lot to them, try and foster a love of books. I will always be grateful to my parents for that. I'm glad to say one of mine is an avid reader, the other now and then, but he does at least read to his own and buy them books. Although I'm sad that he and his partner split so those nightly bedtime story sessions that he remembers so well, are spasmodic with his own children.
Eat together as often as possible without any distractions, so you can have family talks before the offspring become monosyllabic grunters
Treat them to eating out all together if you can.
My older one was a teenager from hell so I guess I'd say reluctantly, you have to let a lot go to focus on the bigger picture, otherwise the nagging goes on ad infinitum. Never make comparisons between siblings, they will all have different strengths and weaknesses. Come to terms with the fact that they are their own person and not a carbon copy of their parents. Many a time I've thought "where did that trait come from, certainly not me!"
Oh and try do something active every day, get out from behind a screen you don't stay supple forever! Mine were quite active in their teen years, mainly blading and skateboarding which necessitated taking them to A&E on occasions.