I've smoked pipe now for over 50 years, and still use the advice my dad gave me when I first started in June of 1959. While I have always smoked more cobs than briar, these pointers apply to any pipe.
Dry your tobacco more than you think you need to.
Pack it looser than you think you need to.
Smoke it slower than you think you need to.
Tamp it less , and more lightly, than you think you need to.
Clean your pipes after every smoke, using pipe spirits of some sort.
Don’t worry if you have a few relights.