Minecraft – I need help with the minecraft skin

It is hard to see in your pictures but it looks like either un-rendered surface faces or the lighting bug. In both cases this is just the state of minecraft at this current time. The issues have been lingering and annoying.

If the surface blocks are not rendering but you can see below them and the render when you step on them, you can mitigate this by turning OFF advanced OpenGL. This will not remove the issue but it did help me significantly with my game and a few other people.

If it is that the blocks are just not lit then walk into them, update the chunk some how (place a torch) and it will update the lighting calculations. This is an acknowledged Mojang issue that they are looking at solving with out killing world generation performance.

Another thing to consider are the mods you are running.. Wallhack probably alters the rendering a bit ;)

Here are eight possible reasons why your skin isn't showing:

1. Your skin has not refreshed yet. (If you're playing Minecraft 1.7 or above)
2. You never had a skin prior to the UUID update, which changes the way skins are stored (If you're playing any versions prior to 1.7)
3. You're not using a legal version of Minecraft, and therefore - Your skin isn't registered to your account.
4. The server you're playing on has online-mode=false. (Set to offline mode; no authentication)
5. You changed your char.png file within the minecraft.jar and not uploaded it to your minecraft profile.
6. You've uploaded it to your http://minecraft.net profile, but it's the WRONG dimensions (bigger than 64x64 pixels)
7. You're playing in offline mode.
8. None of youse have an internet connection.
9. You may have a bad internet connection and thus timed out or received incomplete information.

For #1, you'll just have to wait, and/or restart your game.
For #2, there's nothing you can do.
For #3, buy the game!
For #4, you should consider playing on servers that only allow 'premium'/paid users.
For #5, you should probabally log into http://minecraft.net.
For #6, you'll have to scale it down. Sorry :/ Unless you get the HD skins mod.
For #7, go online!!! (Same goes for your brothers)
For #8, you'll need to be connected to the internet in order to retrieve skins.
For #9, nothing I can say apart from the generic "get better internet" or "clear off your bandwidth by downloading/uploading less (ie. Stop watching YouTube on 4K whilst others are gaming)".

Very likely, based on the information you've stated that your problem is #3.