That’s the important thing. You’re happy; you got to spend a day outdoors; you met one friend who knows about cameras, and you’ve met some more here on The Straight Dope. Result!
On an amateur level photographs exist to drive conversation and build relationships. They aren’t really supposed to be evaluated as images. There’s an unspoken covenant - just as there is in the worlds of local theatre or bowling. “Yeah, they’re not very good. Yours aren’t very good either. If you were any good, you wouldn’t be here. Let’s not rock the boat”. So, yes, your photos are very nice. Could you improve them with Photoshop? A little bit. It would be better to take them again, which will give you another opportunity to go out. Take pictures, wait, look at them later on. Which ones look nice? Copy them, but try to evolve. That’s easy. The rest of it is hard and time-consuming.
Still, tips. Marketing. I suggest you get an Instagram account - the brand is tarnished but it’s still hip - and plug your pictures on Facebook and also to your friends. Your friends will quickly come to know you as The Wildlife Photography Lady. They can be of use to you. Cultivate them.
Decide on the market you’re going to target; families or men? If the former, emphasise the fact that you’re happily married. Have kids ASAP and use them ruthlessly, like the chaps who run The-Digital-Picture, Steve Huff Photography, and The Imaging Resource. Intersperse your wildlife shots with pictures of your kids. Document their every waking moment and put the pictures up on the internet. They will be useful to you. Think of it as repayment for meals and a house.
Assuming you don’t just want to photograph birds in the garden - a perfectly viable option, Flickr has no shortage of people who never leave their back garden - then wildlife photography is hard. It’s one of those few fields of photography you can’t easily fake. There are no cheap shortcuts for long and fast, no easy way of getting yourself within shooting distance of rare birds etc without actually going there.
Assuming money is an object I would suggest you keep the camera (but avoid rainy days and keep it in a bag when you cross mud) and get a 400mm f/5.6L on the used market with a 1.4x teleconverter. That gives you plenty of reach. Hefty tripod. Go out towards the end of the day or at the very beginning. Your life from now on will be a mixture of physically demanding equipment-lugging followed by tedious waiting in the cold whilst sitting in a hide drinking coffee from a flask. It’s a job now. Not fun; arduous, unpleasant, the rewards are slight. Men do it because they want to beat other men or conquer nature, they’re genetically programmed to do so.
On a less extreme level the classic reasonable Canon safari lens in the 100-400mm f/4.5-5.6. I can’t emphasise enough how much amateur photography is about conversation and building relationships. Composition and artfulness are nebulous things that you can’t really talk about. You can however talk about how you liked the 100-400mm’s image stabiliser. At great length. On an amateur level, the gear is everything.
Like most things, wildlife photography is easy in theory. There’s nothing conceptually hard about photographing small objects from a distance in a pleasing way. It’s the practice that’s hard. Really, really hard.