How do I become a better sprinter?

i'm not a terrible sprinter,but i do long distance so at the end i want to sprint, but i'm not that good. how can i get faster at sprinting?How do I become a better sprinter?
Practice doing short intervals: run a 400 meter, rest for 2 minutes, then do another one. all at a pace slightly slower than your race pace. do at least 10 or up to 16 at a time. Also try doing 800 repeats with 5 minutes rest in between. Another good exercise is fartleks: go on a long run maybe 4 miles at a pretty slow pace, but every couple minutes speed up to almost a sprint for maybe 60 meters. then slow back down and as soon as your breathing is even again, do another sprint.