Promise, it is beyond simple. Get a dropper bottle and apply 5 or more drops of water to the end of the stick that you will be working from. Let sit a minute or even less. Use small knife and scrape gently, preferably in one direction. The globules form naturally and will stick to the knife or spatula. The "loose" dampened venom has an affinity for itself, but if a small bit gets away from the rest of the globule just move the big one toward that small piece and they will stick together.
Once you have the right size dot transfer to a different block or stick. It may or may not be necessary to add more water while forming globules. Rinse and repeat to get the desired # of dots. After getting those, 3,5,7 or however many dots, then perform the burns. Next place one drop of water over each globule / dot then apply one at a time. You do not have to press too hard, it will stay on the burn.
Another thing, make sure the burn is deep enough. The initial burn does not need to be made by pressing that hard, but scrub firmly with a paper towel to open up the wound. You will be able to tell that you have an open wound, although nothing serious.
Also, re-wet the points once during the session, probably 5 minutes in. This gets it all in there.
Final thing, tangent -- this practitioner thing is getting to me a bit. How long have these people been working with the medicine and what are they charging? If you lived up the road from me you would get it for next to nothing and I have self-applied nearly 50 times and applied to others nearly 20 times. Seen many things. No formal training, just DIY with some help from the one who started this forum who I believe had some teaching from Giovanni Lattanzi. What I am saying is that just because someone is a practitioner does not mean that they are experienced. I think it is much about money. I digress.
Good luck, you should have no problems, but be safe. Do not over do it, simply because it isn't necessary. Just get that purge.