Can any UV printer make these or what requirements are needed on my end as a printer
You must have a UV Flatbed printer. This process involves printing directly to an adhesive sheet. Therefore, any contact with equipment parts like rollers, feed mechanisms, and especially printheads should be avoided. If this occurs, it may cause damage to printer. Also, you must be using a proper type of Ink Set. Please refer to Printers, Ink Sets, and Layering Instructions. Short answer is, the ink set should not be too Hard or too Flexible, resulting decal will potentially Crack or Bubble upon or after application.