Sorry but after some thought don't call me a dick but there are a lot of ways to do it but unless you have worked with glass before the chances of you pulling it off, making it look good and then last for a length of time is honestly pretty slim. There is some learning that you have to get to know with glass from everything to the mixing and how it starts to set/gell while working with it to as Jeremy said getting ALL the small air pockets out just to get it to last and be durable, but to finish it to a surface that will match the rest of the hood takes time and exp that you can't just pick up the first time. Myself with exp if it were me I would be planning on 15-20 hrs of work on it and just like in paint its mainly all about the prep as once the activator hits the resin the tock is clicking so if EVERYTHING isn't where it needs to be, masked off where you don't want resin and have all your supplies with in arms reach you really don't have time to go get something, fix this, wipe that, ect... After the resin sets you will be looking at a lot of sanding/filling to get it smoothed out and into the shape you want, finally ending in primer/paint/clear to match and again getting all of this smooth enough that it doesn't look like a bad blister on your hood is just not as easy as it sounds.
I don't even like many of the styles of aftermarket hoods available for us but unless your ready to get really dirty, have sore shoulders from the sanding and finish it to a factory fresh clear to match I think it would be in your best interest. Again not trying to be a dick but callin it like I see it that what your really asking how to do is a fairly advanced piece of body work to pull off perfectly. This is your hood so if you do F-it up it will look 10x worse then the intake sticking out and get use to explaining to people why you did what you did. Where as what you have now, kinda speaks fer itself...