Ihave a playing test tomorrow. any tips for practice? i color coded it to me remember stuff but it's not ! i'm freaking out

Keep playing it over and over again until you become very familiar with the piece. Make sure, however, that you are counting correctly while playing. Try not to rush, and keep a steady, even pace. Keep calm, and focus on the piece, and don't get distracted.
 
Practicing tips for the future: even if you do not have a lot of time, a few minutes of quality playing is much better than a lot of incorrect playing, such as poor mouth or finger position, or playing wrong notes or rhythms. Make sure that you are good on the rhythms and notes, tempo, dynamics, and any other specific details that are important.

Overall, proper practice and a steady tempo are very important. 

If the measure is suppose to have six beats and we need 1 note and 1 rest, we can either do a whole note with a half note rest after that since a whole note equals 4 beats and a half note rest equals 2 beats or we could do a whole note rest with a half note after that since a whole note rest is 4 beats and a half note is 2 beats

Well they refer to anime girls