When modelling, keeping all features of size larger than 3x your nozzle size, and adding fillets of 1-1.5x nozzle size to all sharp corners, really helps the slicer create clean edges. Modelling carelessly and letting features chamfer/fillet down to zero thickness geometry doesn’t always translate to the slicer well.
Warpage/peeling from the bed is usually an adhesive, temp setting, or environment problem more than anything.