At the first time I must say that my English is not perfect
I have made my own Watch face put my Watchface and my Gear is not like that i have created.
My created Watch Face:
Some custom fonts renders well in the web preview but not in the watch. You can try increacing the font size. If the issue continues I think you should look for another font…
Which font are you using? I found a Minecraft font that worked for some of my free designs. Try searching for “Minecrafter” on dafont: MineCrafter Font | dafont.com
If you want to use the same font, you can split up the time into 3 layers. One for #Db# then one for : and then another for #DmZ#. I would recommend setting the hours to be aligned right and the minutes to be aligned left to keep them nice and neat.