Well, if you wanted to do this (which I would not advise) you would have to spend a decent amount of money. Buy heavy fabric and thread, you'd be better off buying a jacket with zip-offs. With the price of an Iggy+the price of materials+the possibility of fucking it up, you could buy that old other Xavier with that kind of money. In conclusion, yes you can, but no you shouldn't in my opinion.
why not just wear a jacket of the same material underneath it? vests are so sick because you have the ability to change the sleeve color to whatever you want, thats the best part. I would highly advise against sewing new sleeves on
"When you fall you always want to land in the afterbang position for maximum steeze" - Andy Parry
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