Old English Version

• "You will Cloud your Wisdom" in Old English is "thou wilt cloud thy wisdom" , although "thou shalt cloud thy wisdom" is probably better; "thou wilt cloud thy wisdom" implies that the person actually wants their wisdom to be clouded, which I suspect isn't the case!
  

• 'Thee' in Early Modern English is like 'me' in Present Day English; you never use it as a subject of a verb, only for an object. So just like how you would say "I went to the shop" instead of "me went to the shop", in EME you say "Thou shalt cloud" instead of "thee shalt cloud".

• You use 'shalt' instead of 'shall', similar to how you would say "I go" but "He goes" in Present Day English; the form of modals or verbs changes depending on the person you are talking about. So you say "I shall", or "you shall", but "thou shalt".
  

• As for the 'thy' vs. 'your', you use 'thy' with 'thou' and 'thee', and 'your' with 'ye' and 'you'. As you'll probably notice, each one in the group starts with the same letter, so it's nice and easy to remember.

P.S. I use the term "Early Modern English" here, because technically "Old English" refers not to English as in Shakespeare and the like, but to the language spoken in England around 1000 AD, which is a LOT different... "you will cloud your wisdom" would be roughly translated "þin gerād sceal bēon ādimmiod" in Old English!