What is done often, and is an alternative to the method above ^ but definitely not better, is a layer of ashes then on top of that the DMT, and on top of that another layer of ashes.
One downside to this is that the DMT can get liquefied by the head and pour down into the pipe, to prevent that you can put a bed of a herb or something underneath the DMT so that the liquid DMT will stick to that.
Honestly though you might as well apply the DMT to a herb blend like described here ^
Be careful when hitting the pipe with a flame because the DMT can burn instead of vaporize. You will lose a part of your dose (or everything) and the smoke can get really thick and nasty.
Carefully 'touch' the DMT with a flame briefly then move away again - repeat. Do this over and over to get a vapor going at a nice rate. It can take some practice to get this down but it's ok.
An excellent method I almost forgot about is to use something like choreboy with is a mesh of metal used to clean the house. It can be found in many stores with household goods. Before you use it, burn the hell out of it with a flame because there is stuff on it you don't want to inhale. When no more visible smoke comes off it when you torch it it is ready for use.
Put the mesh into the pipe and the DMT on top of it. Carefully heat with a flame like described above until the DMT melts onto the metal. After that you can apply a lot more heat and it will distribute evenly and make the DMT vaporize with MUCH less burning. I swear its marvellous. The idea comes from a device called 'The Machine' which is said to be the ideal form of DMT vaporization. Well probably only second to heating it under inert conditions - that is absolutely optimal.