it wont be a problem if you do it using vectors. i did one before which is about 6ft x 10 ft using adobe illustrator. i used about 3000 x 2000 of resolution....its quite big, i know..but thats theway it is.

but remember to use all vector and set the preferences.

by the way the terms 'pecah'2 is called pixelated.

by any means you're using a raster image...hmm..good luck finding a super dooper big resolution