Sorry, I didn't intend to be mean (well, maybe just a little). It's just that the net is saturated with people's first maps and this phenomenon really is getting out of hand IMHO.
And maybe you SHOULD start comparing yourself with valve. It will help you improve yourself.
Messy brushwork again, dead ends, no connectivity or flow, no light sources.
Thankfully you have a theme, and yes I see now that you have pews, giant crosses, stained glass, and grandfather clocks (what?) as well as black squares i'm assuming are meant to be headstones. So, you get points for attempting a theme.
You have a light with no apparent source... try adding torches, candles, or light bulbs to make your levels more realistic. Also -- your rooms are way too boxy. There's no real religious architecture going on that would indicate this was a church. If it weren't for the coffins I wouldn't have known this was a church.
