Quetions on screen protector

I just recieved a hori screen protector for my psp I cleaned my screen and put it on my psp, but there is dirt on the back of my screen protector. How do I remove the dirt and thre air bubbles?

Screen Protectors are a waste of time in my opinion I found a cover plastic one just goes over front its not a soft one though its a hard plastic one, PM me Ill show you a picture of the cover. It works great, sure it gets scratched but it covers it and keeps it scratch free. my PSP STILL!!!!!! doesn't have a scratch . Tho the protector is gona go to hell anytime soon o.o" I need a new one....
I can find you one on ebay or something If you like, I found mine at blockbuster o.O

I wanted to use a tinted one it on a trip in a car so the screen wouldn't be so dim or reflect my face.

I think the are waste of time i make this short since i somehow got an error posting message and it wiped my whole like huge paragraph -.-'. anyways.!
To sum up what i said, I think screen protectors are a waste of time, If you want buy a whole front case type idea or faceplate if you willing to pay that much. I can't send links due to im signed ino ebay but go to www.ebay.ca and search the item number. that one is similar
also i think i saw one called crystal faceplate and its the front cover only, it covers 100% front of PSP well almost, minus the area of the buttons, should be just few bucks. So look for something like that, works perfectly! lasts long and they ARE durable, Ive dropped mine many times and no cracks. my Psp i have now was through hell when my brother got ahold of it, im amazed it still works the way it does lol. I take care of my things unlike him -.-' his DS scratched to hell and looks like crap. Anyways! yes, I think you should look into that, works like a charm perfect for what you need!