Laying blotter is wildly difficult to do with consistency, and for a compound with a low therapeutic index such as 5-MeO-AMT, I would say that making a sheet of gel tabs, or something else that involves volumetric liquid dosing would be the wisest. Even then, getting an amber dropper and keeping it as a highly diluted liquid may be the move. If not, ordering "candy blocks" (they kind of look like legos) can provide an adequately large and porous material to absorb numerous drops of any liquid. I'd advise dissolving the 5-MeO-AMT in everclear if you can access it, as it evaporates very well. I've applied etizolam, LSD, and a handful of other drugs to candy blocks and pez blocks in the past for personal use and it's a fantastic medium in my opinion.