I get the impression you are new to the DE, and I'm not sure if you were looking for input, but I'll give my thoughts anyway, for anyone else new to DEs.
Get yourself a brush and soap man! Also avoid scrubbing over areas lots of times without soap in it, its a great way to do damage.
Lighten up your touch there, and you will reduce your cuts, you look like you are going pretty heavy handed, like you would with a cartridge. It does take some practice though. I think your chin cut may have been due to angle. you want the handle to be closer to 90degrees to your face (obviously, true 90 would hold the blade off your face) instead of parallel to your face like a cartridge razor.
of course merkur recommends using their blades, but all DE blades will fit, and you will find they all shave a bit differently. But trying a variety, you will find a blade that works best for your face.
All in all it looks like its working for you, so do whatever seems to work best for you.