Welcome back! I am thinking this is your first try at hometesting, right? If so, I would set my sights on getting blood first. The curve can come after you and Osiris are both comfortable with the whole thing. Of course, if you are an immediate member of the Vampire Club, you can go on from there!
So I assume you have checked out the websites and read the info:
http://www.youtube.com/watch?v=_zE12-4fVn8 http://www.sugarcats.net/sites/harry/bgtest.htm
And you have your supplies ready?
meter and strips
vaseline (to put where you want to poke so the blood beads up)
rice sack
lancet
treats
Have you sure used the meter on yourself so you know how it works? Have you put a flashlight behind his ear so you know where you want to poke? (You are aiming for the little capillaries that come off the vein running down the edge of the ear.)
The best advice I can give is - don't be discouraged if you don't get blood on the first try. Very few of us did. (It took us a weekend to get a drop) It may take a while to get your technique down. We usually say 3 tries and then a treat for the kitty and the human. Then come back on and we will bombard you with ideas/tips to help.
Oh, and remember to breathe. You will get this. We all did, eventually. It is wonderful that you are going to master this; it is so important in keeping Osiris safe.