"Shy Cupid" eh? More of a Psychotic Killer Cupid. Well I suppose he could be BOTH, I mean, why limit yourself to one option or the other right? Screw what people say, follow your dreams you creepy fat winged baby!
I really think my medicine should be a slightly lower dose.
I generally avoid filters like the plague, or use them very sparingly. There's a lot of careful judgement called for when using those things. And I don't do careful judgement. I'm more of a bull-in-china-shop kind of paint-slinger!
I avoid them like the plague as well. My advice is: use filters only if you know how to. Sharpen filters are commonly used for concept art since deadlines are tight and they make the artwork look more perfect than it actually is.