If you have built a level using the Sum Points: Level Pack editor, post it here and challenge others.
My first level attempt:
5,4,12,7,5,9,8,7,11,8,3,10,11,6,8,6,3,4,10,4,12*8,6,-4,0 ,7,4,-3,1 ,10,5,-5,0 ,7,2,-3,0 ,8,5,-2,1 ,5,7,-5,1 ,10,7,-4,1 ,6,4,-1,1