This one looks better other than the short through the pads on the RTC. Your major problem with the mounting holes is likely to be finding their position. I had a look last night and didn’t find a mechanical drawing of the module that gave x/y coords of the mounting holes. Measuring them with vernier calipers is probably the easiest way to go assuming you have the module already. If you haven’t seen them, these 2 tutorials apply to the latest version (most out there are for older versions):