Help with dirt jumps?

Question

when i build dirt jumps for my bike the lips are always bad how can i make dirt jumps with good lips

Answer 1

you could try using cardboard under the dirt like i do. itn keeps the lip nice and sharp i also pur some milk cartons under the cardboard too keep it hard

Answer 2

Water and more patience.  Also try rolling up then back down 10 or so times.