Loosen the strings a bit and tighten the claw screws on the back. There are a plethora of articles on this site and videos on YouTube to walk you through the process.  

Looks like you you increased the string gauge and kept the same tuning yes?
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NB -- if you did NOT change the string gauge, you may have everything tuned an octave high. 

A Floyd is like a teeter-totter. If you change the tension on the strings by changing gauge or tuning, you need to balance the string tension by adding sPring tension. Take off the spring cavity cover on the back and locate the "claw" that has two wood screws. Loosen the strings first (well, loosen the locking nut first and THEN loosen the strings) and you'll watch the back end of the Floyd drop. If you were NOT tuned an octave high and if you DID change string gauges (usually a heavier one will cause this), tighten the screws into the wood a  ways. Then go back and retune the guitar. This will take a bit of back and forth until you get the Floyd level again. 

Once it is, do NOT change string gauges or tuning again unless you're ready to go through this to accommodate the new choice. And while we're on the subject, when you get done with that part, you may have to check the relief and adjust the truss rod (1/4 turns at a time and let it settle for a bit) to get the bend you've probably put in the neck out.