Three to five words (keep it simple-if you need more than five it’s not a simple sentence and you can’t use this structure).
No specific order unless there is an actor and a receiver (if there is someone or something doing an action and someone or something being acted upon, you will sign the actor, the verb (action), then the receiver.
I love coffee.
ME LOVE COFFEE.
Dr. Pepper is my favorite drink.
MY FAVORITE DRINK D-R P-E-P-P-E-R.
I am going to the store.
ME GO-TO STORE.
Notice that the ASL gloss is all capitalized (to represent signs), has punctuation (a period) at the end, has dashes between the letters that are fingerspelled, and has a dash between the two words used in English to represent one sign in ASL.
The English is written with only the first letter capitalized and there is punctuation (a period) at the end.