I agree with above^^. You need more practice. And in my opinion, the first photo was the best one.
I don't count photography as my hobby but I phograph occasionally and have found some tips I've noticed good.
1)Remove obtrusive, unwanted objects if you can (eg redundant garden tools if you try to photograph flowers, "background" cars and bikes etc if you try to catch natural landscape). Those objects are often ugly, broke the 'magic' of the picture and steal your attention from the primary object.
2) Crop if you need to. Profit from photoshop programs. Now because it's a way easier to treat photo with photoshop program (or at least I think so) than try to find a perfect view angle with camera, remove every obtrusive object etc before photographing you can profit from those programs. My guideline with most of pictures is; make it so simple than possible. If there are 'pieces' of something close the margin of the photo, it's better to crop them out, it makes it more simple. An extra tip especially for all kind of vertical and horizontal objects (like trees): don't crop them so that you 'split' them. Splitting them makes whole the photo look somehow incoherent and wrong cropped. Here's a little example, not so good but hope you'll catch it. So let's think you try to catch that flower bed in the 'photo': E1.jpg
Looks a little more simple and calmer, isn't it? Personally I'd perhaps photoshop those birds out. The object needn't to be always in the middle of the photo, use your creativity and find more angles! E2.jpg
3)Blur, sharpen if you need to. Especially if you have one, clear object that you want to highlight. You can bring the primary object more out if you sharpen it/blur the background a bit. In most of photoshop programs there's a tool which allow you to choose and 'pick' areas that you want to manipulate. Use it. Don't still blur/sharpen too much, it doesn't look good.
4) Check color/contrast. You can set them with most of photoshop programs too.
These are just few basic guidelines I obey. It isn't the only and one right way, of course there's all kind of other ways to photograph too. Depends a lot what kind of photos you want to take.
I also agree with it that you could familiarize yourself with the settings of your camera more. If you want to see some of my photos you can watch them here: Sharing the best part of my photograpy