Как создать свой плагин

/*
Hello Admin, v0.2
by k0k
*/

include <amxmodx>
include <amxmodx>

public myfuction(id, level, cid)
{
if (!cmd_access(id, level, cid, 1))
{
return PLUGIN_HANDLED
}

client_print(0, print_centr, "Hello Admin !!!")

return PLUGIN_HANDLED
}

public plugin_init()
{
register_plugin("Hello Admin", "v0.2", "k0k")
register_clcmd("amx_helloadmin", "myfuction", ADMIN_VOTE, " : says "Hello Admin !!! to game screen")

}

/*
Hello Admin v0.2
by JGHG|k0k
*/

include <amxmodx>
include <amxmisc>

public plugin_init()
{
    register_plugin("Hello Admin", "0.1", "JGHG|k0k")
    register_clcmd("amx_helloadmin", "myfunction", ADMIN_VOTE, " :prints Hello Admin!!! to everyone")
}

public myfuction(id, level, cid)
{
    if (!cmd_access(id, level, cid, 1))
    {
        return PLUGIN_HANDLED
    }

    client_print(0, print_centr, "Hello Admin!!!")

    return PLUGIN_HANDLED
}

include <amxmodx>
include <amxmisc>

public plugin_init()
{
    register_plugin("blabla", "0.1", "blabla")
}

public client_putinserver(id, level, cid)
{
set_hudmessage ( 255, 255, 255, 0.01, 0.60, 1, 10.0, 9.0, _, 1.0, -1 )
show_hudmessage ( 0, "ТУТА сообщение" )

return PLUGIN_HANDLED
}