Hi, congrats on your 1st jump. Ive only got 42 jumps so am in no way qualified to tell you what to do especially as Ive had a few bad ones myself. But definately DONT look straight down, the ground rush is very confusing. I flared too high on jump no.5, thinking i was closer to the ground than i was, and landed on my knees on the tarmac runway after dropping 10ft.I was told to look out at where i intend to land, easier said than done at the start but you'll soon get the hang of it. Your instructor should be giving you radio help for the 1st few jumps.
Good luck and happy landings!