We also would like you to follow the check listed below for your spring cleaning tomorrow. 

^ Is there another list that people have to follow? If not, you do not have to use 'also'.

Now let's proceed:

We would also like you/We would like you to follow the list below for tomorrow's spring cleaning at 3.30 pm. (I assume the spring cleaning starts at 3.30 pm? If so, then you can move the time into this sentence so that it is easier for people to understand what activity is happening, and when)

- Please tidy up your desk and put all papers on it in your inbox tray.

- If the tray is already full, just put the remaining papers next to it for now.

- If you do not need the file/document anymore, you can throw, recycle or shred it.

If you are planning to rearrange or move your cabinet, please take safety into consideration.

There will be some prizes to be given away to the cleanest and messiest desk owner too. (Wait, is there also a prize for the messiest desk owner? Haha, sounds fun)

So please get yourself ready for tomorrow's spring cleaning. Light refreshment will be served.

--

Notes:

1. Try not to use the same words twice or more in the same sentence if you can. For example, there are two 'desk' and three 'your' in your second sentence.

2. If possible, make your list as short and simple but easy to understand as well. If there are two many words, it will be harder for people to process information.

Follow the K.I.S.S rule: Keep It Short and Simple!