I don't know the Pearson or the airports in the nearby area.
But GENERALLY a 18-55 lens, in my experience, is a little bit too short for spotting. You need to get very close to aircraft and actually, I don't know if your location allows it.
So, in this sense, I would wait for people familiar with the area.
Are you new to photography? (I don't know which is you experience!)
Because if the mentioned tips are about "technical" issues, I would recommend you to read something about photography before, or also, why not, feel free to ask here.
Everyone is a photographer, before being a spotter!
With your lens, in this sense, I think you can make good pictures with a "dramatic sky" and the aircraft passing above your head... or just a good composition at sunset or something like that.
Just to give you an idea of what I am thinking about.
and here we come to a difficult point!
Standards are very high and there are several rules to "obey", otherwise you end up into a rejection.
Generally a bit of post processing is required: Contrast, levels adjustments, sharpening, Noise reduction and things like these.
Photoshop is a well to do program, but it's payware.
You can do almost the same job with other editing software, which are freeware... but I am sorry, but I can't remember their names.
Probably one of them is GIMP, but take it with care, I'm not sure!
HOpe it helps,