sculpting the ear

the ear is being very difficult my brushes are not acting the same way that is shown in the video where the result is so smooth mine adds a pixely kind of mesh with it popping out in weird places also the smooth brush takes away a lot of the mesh unlike just smoothing like it does in the video. also the mirror modifier seems to be off as one ear would look ok and the other ear would be messed up. I have all my settings the same but i am working on a laptop if thats it but thats the only source i have right now. my problem sounds kind of like the other question but that never got an answer