1994 Accord DX 2.2L

So I was driving on the highway and I felt a thud under my car, and I guess it hit something. So I went home and checked the bottom of my car and behold I was leaking oil. The collision created a small dent near the drain bolt and was caused a small opening at the drain hole.

I have bought a new oil pan, gasket, and sealant and will replace the oil pan this weekend. Is there anything important I should know before I start?
Thanks.