One good way for me to learn is by putting many of my works in my album, and then asking people to check 'em out and see what they think, then i change it and then i put the ones who had some great critique out

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Hive'rs also like something that is absolutly stunning!
It could be so insane, it could be a burning flower for an example, or a frozen skull with a cloud over!
It just have to look good and that you can see what the icon itself means.
I think you could use your fantasy or your imagination like hell... just draw what you feel for !
I've also discoverd that if you train much in drawing with a real pencil in real world, you sucess quite good when you draw on your computer!
Something that realy gives the final touch of a sword, is a sword handle :/!
It's the final piece of the puzzle

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And it's also a great oppertonity to leap away with your imagination.
You could make your handle like a snake,lion,star... anything!
But i think you realy should add a handle

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Even though an awesome work as your secound work!
EDIT: 4/5 too btw

will switch to 5/5 if it will be better

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I see now that you dont know how to draw handels !
No problem, google for swords in the same time you have your drawing program and then you just try drawing different handels slow... till you can do it without that picture.
Good Luck My Friend!