Hi Courtney,
Sometimes it takes a little while to get the hang of it. Very few people manage to get a successful test the very first time they try. Be kind to yourself!
I see Fiona has given you a link to some hometesting advice already, but here is the link to another page of info, tips and tricks, and example hometesting videos:
Hometesting Links and Tips
The most important thing is probably that the ear is
warm. Warm ears bleed so much more easily than cold ones.
Massaging the ear can help to get the blood flowing; and some folks use a pill bottle filled with warm water, or a 'rice sock' (details in link above), and hold that inside the ear to warm it.
Putting something against the inside of the ear, opposite to where you're pricking, will give the lancet something to 'resist'; otherwise it can push the ear away rather than prick it. You can use a little bit of folded tissue, or cotton wool, or just one of your own finger tips (but you may occasionally get blood from yourself that way....

)
Two ear pricks very close together can often produce enough for a test where one ear prick might not.
Massaging immediately below the ear prick will help to 'milk' more blood out. The blood flow runs from the tip of the ear down to the outer edge, so massaging below the ear prick can help to 'catch' some of that blood on the way down.
A teensy weensy smidge of vaseline on the outer edge of the ear will help the blood to 'bead up' and stop it disappearing into the fur.
You will get the hang of it, honestly!
Eliz