Good way's to practice?

Alright so,

My friend I will be doing most of my riding with this summer doesn't think I will be as fast or faster than him by the end of the summer (like November). I started riding in August which was just mostly learning how to shift and clutch and about September I started going to the track. I have been to the track about 6-8 times total. I ride a KX100 and my friend is on an XR200 1993. He has been riding since he was a kid. Well, on like a 1 and a half minute track, he is like 1-3 seconds faster than me average. this is on like a beginner track with very small jumps (we rode this because the other one was in terrible condition) I think he is faster in the corners but on a bigger, nicer track with good sized jumps, I think it will even out. What are some ways I can practice at the track to get the most worth out of track days? It feels like my lap times get lower and lower every day at the track but I want to know good ways to practice and what to think about when I am riding to decrease times. I know basic technique stuff but I am just wondering the keys to get faster lap times. I know it is in the corners but I am not sure where I am losing my time the most and where I improve.



Thanks