Do women care about penis size? I have shit girth and 4 inches

Is the first thing a girl sees when you introduce yourself your dick?
The answer to that is the answer you're looking for

Some do, some don't.

I dated a guy with the exact cock you described and it was some of the best sex I've ever had. On the other hand, my current boyfriend has the biggest dick I've gotten my hands on and apparently one of his exes complained to all of their mutual friends about how small he was.

Just find someone who isn't a size queen. This may be easier said than done, but it's possible.

What makes guys with small dicks suck is their massive insecurity. In theory, small dicks shouldn't be an issue, but the guys that have them often act like giant douchebags to compensate for it for some reason

just don't be an insecure douche and you'll be fine

How do you measure your dick? Do I push into the the pelvis bone or start at the surface of the skin?

You have fingers and a tongue right? I have a similar dick and any woman I'm with cums 3 times minimum. Often the second and third time with my cock in her mouth.