this is a logo I made for my friend retasim (the real background is grey but I made it green so you can see some stuff better)
I made a kinda 3d style circle adding some shine to it on top.
I made a shadow using blur and gaussian blur from the filters and added it to increase its depth and making it looks cooler.
The blue smiley is 'glassy dude' you see is a work of mine I got inspired by retasim's emotes that he was using in irc :0 and 0.o(use zero instead of o)
which look like glassy to me.
It was my first time making glassy stuff on gimp.as you see I didnt wanted to add nothing to the right eye I wanted to keep it this way so it represents the o of his emotes.

this is the logo I made for my friend kwlpwnz
its a skyrim head with a stick man head in it with white eyes.
I made an handmade arrow on the helm that strikes the helm and breaks it, the crack on the helm is a brush I used and removed the parts that are going out of the helm.

this is the default image of the helm I used

as you can see I added red lighting to the bottom and shiny lighting on top.
I made the helm transparent so it looks more in to the background color of the leg texture that I made(which is grey platinum color)

this is mine logo didnt work much on it
Muffinz is comic sans.
I shaded from top and to the bottom making them look 3d.
the muffin picture shade isnt that good its kinda random I guess -_-.
The 'Cook' font is comic sans aswell I just used darker color on the font and added a shine to the top and tada it looks cool.

Not much to add on this one just resided them a bit to make some space to more logos and added shadows on them you will see that the transparent helm looks cool with the background