I know people here’ll be able to help me…
I made this as a sort of a gag to put over the computer desk. It’s supposed to say something along the lines of “Keep this computer desk clean!” More or less.
(I asked a language message board for most of the translations.)
I know I screwed the Hebrew up. Hebrew characters are harder to write than Chinese (for me) but I know I screwed up the Chinese and Japanese, too. 
Well, the English looks okay…
The Hebrew, Chinese, and Japanese are not quite right.
The smiley faces look too happy. They should be scary.
I know. 
It’s so hard to write (or draw) those things.
I find them terrifying just as they are. It’s always scarier when the evil maniac is smiling while he kills and maims.
The Japanese kirei ni means roughly “keep it clean” in abbreviated form, but more accurately means “cleanly”. No specifics, but as it’s on the computer desk (I assume), the implication works okay. I’ve forgotten way too much to recall how to render what you had in mind.
I love the lengthy German one! 
The German looks o.k., a little long an old-fashion-style but o.k. and also the bottom “germanish slang” one is right
Schlaf gut!
Brigitte
The German one is supposed to be long and old-fasioned. 
The lower-right corner is meant to be Swiss-German, although I’m aware that it isn’t usually written.
I don’t even know why I made this. Nobody who speaks these languages is ever going to see it, but it was better than just writing “KEEP THE COMPUTER DESK CLEAN.”
At least now my orders have an element of fun to them. 
I was joking everyone. I was just repeating what Cranberry said. I don’t know a darn thing about any of those languages there. Except the English one and little enough of that.
I believe the German should read like this.
ACHTUNG! ALLES LOOKENSPEEPERS!
Das Computermachine ist nicht fuer gefingerpoken und mittengrabben. Ist easy schappen der shpringenverk, blowenfusen unt poppencorken mit spitzensparken. Ist night fuer gewerken bei die Dummkopfen. Das rubbernecken Sichtseeren keepen das cotton-pickenen Hands in die Pockets muss; relaxen und watschen die Blinkenlichten.
Kirei ni might not be an ideal choice, but a Japanese person would certainly understand what you meant with no trouble. A more complete rendering might be kono tsukue o kirei ni shimashoo.
The Chinese characters look more or less right, if a little scribbly, but my knowledge of Chinese is too shakey to know if you nailed the grammar. It’s probably fine. A Chinese person reading it would understand it alright.
What all have you got on there anyways?
I see
English
Hebrew
Finnish
Spanish
Latin
German
Czech
Swedish(?)
French
Russian
Japanese
Chinese
…What else?
Swedish, Latin, Finnish, Tagalog, Polish (not Czech) and I forgot what else.
The smiley face originated in Worcester, Mass, I’ll have you know…
http://elouai.com/smiley-history.php
It’s kind of like a local pride thing…World Smile Day and all that…Oh yeah, and our soda Polar bear came waaayyyy before Coke’s (or was it Pepsi?)
Robin
What, no Irish, Cran? Want me to get it for you?
Redwolf
Sure. 
I have a few other things I’m going to insert randomly in the blank space as well.
Thanks!
The Finnish text actually says: “Keep this place clean.” An accurate translation would be: “Pidä työpöytä siistinä.”
Hope you see the a’s and o’s with dots above correctly.
Kiitos ja kumarrus,
/Arto
Oh, and the Swedish says about keeping the computer room clean, so it’s takes a bit more effort… Desk in Swedish would be something like, “datorbordet”. My Swedish isn’t very good.
German Slang???
that was Swiss! 
Dini muetter schafft nit do, muesch sälber ufrume: Your mom doesn’t work here, you have to clean up yourself!
The French is perfect