I got a tablet for Christmas. Didn't even ask for one but it's a cheap one ($50) from Lidl. It's pretty nice though but when I use it my lines aren't clean, there are little spikes in my lines and I don't know why. Like I'm trembling when I trace which is not the case. How can I get a clean drawing? What program should I use? How can I learn to use layers? Thanks a lot!