to be perfectly honest, your car is not a very good example of a 6th gen as you may have guessed by many of the replies on here, they were very "honest" shall we say..
First and foremost, do you really even need a spoiler? It's only doing harm to your ride by every sense, my advice would be to simply loose the spoiler or er's and leave the trunk as it was meant to be.
Secondly, your ride from the pictures (which I must say were not very good) looks abnormally high, and loose the new civic's hub caps, they do no good for the ride.
Loose all the un-necessary lights/neons and led's, keep it quiet, and stealthy, by this point you might be guessing to yourself, "Should I take the ricer sticker's off my car?" Well, you have guessed correctly, so do that as well.
Save up some money, send your car off to a good denter and give the outside a good a haul as economically possible at that point, and look for a simple JDM front and back lip kits or get them made.
Time for a paint job, get it done from a reputable place, in a very quiet colour i.e (white, silver, or heck even black), and while the cars getting baked, give the engine a slight tune up, throw in an air-intake, some headers, a few pipes here and there and pack it all up together.. OH! and yeah Grab some lowering springs while you're at it, and get those stock wheels (less the plastic) painted black (Matte or Gloss, you decide), get your brakes serviced too (very important).
See, people for some reason forget, stickers, un-angular and massive spoilers don't make your car cool, rather it makes you look more like a fool (no dis respect).
You asked for honest criticism and that's what I gave you.