Soundsystem00

i like this program and have been using it for a few months but i still have no idea why I have yet to find the eraser tool. I work by sketching with paint brush. The vector layers seem like they make a new layer out of every single stroke and no matter what I do, they wont merge, which is discouraging. Something just is not clicking in this program but I believe in this program and really want to break away from adobe and their invasive cloud / expensive prices. Thanks!