hey man, dont sell it off, that's a giant waste of your time and money. you spent the time to do a sub par job, one that you yourself feel is all wrong. why let that time go right out the window, as well as some money down the drain? pick it back up, strip it(i reccomend you use a chemical stripper rather than sanding, much better results all around), then spray it, and be done with it. if you want to sell it afterwards, you'll at least pick up some extra money, rather than selling the guitar as aproject got $15.
and i feel your pain. i redid my jackson, three times. first time i scuffed up the finish and sprayed over it, didn't work. the finish bubbled up all over. next i stripped it with sandpaper, and had shitty results with the wood, so i covered everything up, made it all smooth, sprayed, and it came out crap. so finally took my time, chemically stripped the paint, filled the grain, prepped, sprayed, finished up, sanded and it came out great. you just gotta take your time. if you screw up, well, just start again. it's a pisser, but you'll be happy with yourself in the end.