Never judge the appearance of the soap by how ugly the outside of the loaf looks or by how homely the crusty leftover bits are. I have been (pleasantly) surprised many times when I cut an rough looking loaf and get really nice bars. It almost always happens that way -- ugly loaves usually produce decent-looking cut bars. Maybe not Michelangelo quality, but good enough for soap. You may have poured the soap when it was a little too cool, or you may have overcooked the soap so the water content was a bit too low. But honestly, I don't think your Pringles loaf looks unusually homely -- it's about how my loaves of HP soap usually look. If you want to work toward a smoother look to the loaf, you might want to try a cold process (CP) method.