1)
What is the significance of the rim that surrounded the mouth of the Me'il?
1.
Ba'al ha'Turim: Since the Me'il atoned for Lashon ha'Ra, 1 hints that one should place a rim around one's mouth, to avoid speaking Lashon ha'Ra
2)
What are the connotations of "Lo Yikare'a"?
1.
Rashi: It teaches us that whoever tears the Me'il transgresses a La'av. 1
2.
Seforno and Rashbam: It means that the front of the Me'il should not be open. 2
1
As is moving the Choshen from the Eifod ("ve'Lo Yizach ha'Choshen me'Al ha'Eifod" [above, Pasuk 28]), and "removing the poles from the Aron ("Lo Yasuru mimenu" [Shemos 25:15]).
