Hey there- I noticed DrFuji replied to you already so there's probably not much need for me to. Basically, you should have a look at the various hack sections in ROM Hacking (namely the Hacks Showcase, Progressing Hacks and the Sideshow Showcase). Each section has a sticky thread, you should have a read of each, so that you have an idea of where your hack would fit.
I'd suggest reading the Sideshow Showcase sticky first- if you think your hack doesn't fit there, then next would be Progressing Hacks. (It's VERY unlikely that a hack goes straight into the Hacks Showcase).
I also recommend having a look at various hack threads in a subsection before posting- if you can see them, that means they were approved, thus they'd be a good basis for your own thread! :)
I'm new to the pokemon community. I have made a new pokemon hack called pokemon blazin fire and I wanted to show it off. I have tried to start a new thread but the site wouldn't let me. Can anybody tell me how to start a new thread?