Maverick0312 -
The reason for all the ringing and the edge staircase artifacts is that you started from a low quality, low resolution JPG. The original was only ~1000 px wide, so I cleaned it up a bit and up-rez'ed it to 3000px wide. Download my higher resolution tweaked version by double-clicking on the low quality, highly compressed, artifact-ridden, in-forum preview and download the full rez version. Load that image into your software and see if it is any better.
I presume you are asking for our help because you can't access the original of this image, which almost certainly was done at much higher resolution, and was saved in a better format, perhaps, , eg, *.psd, *.tif, or even vector, e.g., *.ai, *.pdf, *.ps, etc. If any of those files happen to be available, I would *strongly* advise you to use it instead of an after-the-fact fix, such as we are providing.
HTH,
Tom M
PS -
GreenManiac - I presume you further decreased the resolution to only 700px wide so that the in-forum display would look better. However, further decreasing the size of the OP's image from 1000 px is absolutely the last thing the OP needs. If you ever run into this situation, feel free to post images on this forum up to 3500 px, and just caution the OP to be sure to use the full rez version (which they can access by double-clicking on the in-forum preview).