Moved to an appropriate gallery for criqique.
I am brand new to photography and need some feedback. What can I improve? Does this even look professional?
In order: Welcome; Almost everything; and no. Lots of good feedback already, but I'll add my $00.02 to the list. The first image is a write-off; it's at least two stops under-exposed and even if you adjust the exposure for the people, the rest will look less than stellar; you could get a usable image from it, but it would take a LOT of work. As mentioned, shooting into the sun takes a lot of skill and usually supplemental lighting as well. The issue that no has commented on here is the posing... You've got the largest member of the group near to the camera and one of the smallest farthest away. There are two ways (IMO) that this could have been improved: Dad, mom, boy, girl or Dad, boy, girl mom. Also watch hands and feet; they don't need to be identical, but you should have them doing something similar, and please, get them to sit up straight!!!!!!!!!!!!!
The second image is better; the exposure is close enough that you could work with it, 'though there's still a lot of work required. I like the casual, relaxed and happy moment you've captured here, but we need to see a little more of Mom's face.
Shooting "loose" or "large", that is capturing much more area in the image than you need isn't a bad thing as it allows you to crop in post. Be careful however that you don't shoot too loosely as image quality will degrade significantly as you crop in post. These are family portraits, so we need to see the family, NOT the trees and grass. I would suggest a 4x5 crop for both of these and eliminate as much of the scene that isn't the family as possible.
It's a good start, but there's a lot of room for improvement, most importantly in the lighting. Just because you're outside doesn't mean you can leave your strobes at home!