Beautiful tiling - cute subject. Your pieces fit so nicely together. I always use sanded - no matter the grout lines. Of course, I'm not a perfectionist, and don't pay too much attention to grout lines and andamento - just use the crazy patch method of tiling. I recommend using your gloves, but using a small sponge to spread the grout. I find using a sponge in a circular motion spreads the grout and gets it into all the little places. Then when finished, I take a dry sponge to wipe it down, then a dry cloth, cleaning as I go until the final dry cleanup. After everything is dry, I use a cloth w/vinegar to wipe off the glaze and shine it up. Hope this helps. Welcome to the forum.

I concur with everything Slow said. I never use unsanded grout. The sanded grout gets into the tiny crevices with no problem.

I forgot to mention the type of sponge. I get the large grouting sponges from Lowes, and cut them apart. They're better than kitchen sponges for spreading the grout.

Or just use your hands...it's kinda like making mudpies!lol! Smoosh the grout around! But a sponge would probably work better as not to tear the gloves...but I always like to feel the pc as I work on it!