555 timer with led

It seems to look alright. I have made a simple mistake a few times when using the 555. I sometimes count the pins wrong and go 1-4 down the first side and then instead of 5-8 going UP the other side I count going down so 8 is actually 5, 7 is 6 and so on. I'm not saying you did this but I did a couple times and it took me forever to figure out what the heck was wrong.

Also check to see the LED is correct polarity and not burned out.

Let me know if any of this helps. Your drawing above looks fine so I am just throwing some things I have done in the past your way. Good luck!