method own girl
Bluelighter
I have had similar issues, and as I have decimated most of the "good " veins in y body it's only gotten harder. Try soaking in a hot tub right before, it dilated the veins and makes them more visible and easier to hit. If you don't want to get completely in the tub then just run your hands,arms,feet or whatever area you're shooting in under some hot water. It always works for me.