Great start indeed! I really like the composition of the flower picture.
Rambling advice off the top of my head:
One challenge you're going to run into with macro photography is that using a macro lens requires more light than usual. The amount of light is going to affect how well you're going to be able to shoot your subject and keep your shutter speed up and without enough light, you're camera can drop the shutter speed too low for macro work (if you're using AUTO). I'm not sure much you know about using your camera's shutter speed, aperture, and ISO. If you are on AUTO you should try to shoot during the daytime in areas with a lots of light. This will give your camera the best chance to get a sharp shot. Running a flash works too, but is a whole conversation in itself. Once you learn more about working with the camera's settings you'll be able to get better and better shots in more challenging lighting conditions.
Building your skill editing your photo in post can make a night and day difference in your results as well.
Macro is something I look forward to when the weather breaks every spring. Enjoy the new hobby and have fun exploring the macro world!