... That is what the character looks like, from a source point of view.
What you should do, if you want to know
what the character looks like is open another instance of minetest, log into your local server, and stand in front. If you want to change what the character looks like, consider the
skins mod. You can also use
this tool to create minetest compatible skins.
EDIT:
To run a second client, go to the multiplayer tab of your first client and leave the address blank. Fill in the name as singleplayer. Start it up! Then, open a second client (from a different folder), go to multiplayer, and put in this address: 127.0.0.1 - and then add whatever name you like.