I'd really like to do more in Macro like I'm assuming you did above.
This is just a closeup shot, not macro.
The Canon 17-55mm f/2.8 I shot this with only has a magnification factor of .17x it looks like and with
a 25mm extension tube (brings your lens focus point way from the sensor increasing the size projected on to the sensor)
it has a mag. factor of a maximum of .51x. The 17-55 is not a good macro lens. This just happened to be the lens I had
on the camera and I didn't want to swap lenses while trying to keep track of him. He also wasn't sitting still so trying to do
a proper macro shot on a tripod and focus stacking would have been impossible.
I don't own any true macro lenses with a 1:1 or greater ratio. I'd like to eventually pickup a 60mm (called a prime as it has
a set focal point and can't zoom) f/2.8 that is a 1:1 so you could have a penny pretty much fill the frame and get all the surface detail.
With the 25mm tube it is a 1.61x mag. factor, much much different than the .51x! If Abe had individual beard hairs on your penny, you'd see them!
My camera has a 1.6x crop factor, so a 100mm lens is equivalent to a 160mm lens on a 35mm camera. This works well for me because it gives me
extra reach out of longer lenses. The shot below was shot at 400mm, which is 640mm equivalent for a full frame camera. The 600mm Canon is over $9,000
It's an f/4, you get more than just range for the $, but I get a lot out of my $1,700 lens. This coyote was probably 100 yards away and at the Ridgefield WA refuge you can't leave your vehicle so I braced on the window sill to steady at that long length with the heavy lens and scrunched down to see through the view finder.
Your best bet though is to learn Photoshop well for post processing and find interesting subjects to shoot. The image I've made the most money off of was cleaned up in Photoshop but shot with an old $200 Canon A95 point and shoot!