lame stuff aside; dust won't appear in your picture at all. I can't rmb the proper term and explanation, but no worries, the only dust you see in your picture (if any) are most likely dust on the filter infront of your sensor
Dont worry about the speck of dust since it doesnt even affect the photos.
Honestly, I will only check my glass if I see a black spot on my image or when I am going to sell my lens.
Otherwise, just enjoy shooting....unless fungus, otherwise a few specks of dust will not affect the image.
If you don't mind taking the risk of accidentally causing more damage, I don't see why not...A little dust doesn't really matter.If you are still feeling uneasy, try getting service centre or CS-er fatigue to clean your lens.