placeholder looks like a 30 min job in blender tbh, it needs a lot more refinement to not look like a bunch of basic cube meshes tacked together
like even though blockland's is simple it has care put into using circular shapes and smoothshading in certain parts so it doesnt just look like a bunch of rectangles. even if you arent going after blockland awsthetic, it needs the same care.
and please, dont settle for anything less than perfect, since it will likely define the game aesthethic more than anything else. eg if you feel like something could be better, reject the iteration and work on pinpointing and fixing the oddities you feel are present