So, recently I went out for a look at Neptune with my telescope and I found the general area of where Neptune was. However, when I took a see for myself, there were a ton of blue stars everywhere and I had a really hard time deciphering which one was actually Neptune, because along with all the other stars, Neptune is blue too and it blends in easily with the rest. How do I know which is the blue planet?
Neptune is a tricky one: its color is not very different from a type A star, and its angular diameter is only twice that of the Airy disk of a star in a 20cm reflector. Even with good optics in good seeing conditions, the planetary disk will be a little blurry. To me it looks like a small piece of colored chalk, but that's not enough to be sure.
The keys to positive identification are a good finder chart and optics that help you match it. It's possible to locate it using a 1× sight and a 1° low-power eyepiece field, but something in between makes it easier. I use an 8×50 straight-through finder, which shows a ~5° field to magnitude ≲9.
The year-long charts at in-the-sky.org are at a useful scale. In Stellarium you might try a 10° field of view (ctrl-alt-6) and use the View > Markings panel to add a circular FOV corresponding to your finder scope. Remember that some optics will invert the view. If you can confirm that the stars you see match the ones on the chart, then the other object is Neptune.