Make sure the hood is aligned properly and isnt off to one side alot. Did you unbolt the latch from the hood? Lower the hood slowly and make sure the latch is seating directly in the middle, if its not you will beable to feel it when your trying to close it, if it is and the hood isnt closing, pull out the hammer and give the latch a smack to raise it a little.
make sure that the hood release isn’t stuck open.
When i took my dash apart I must have slightly bent something so my hood release doesn’t spring back to the locked position unless I push it slightly.
same thing happened to me, make sure that bar that supports the hood latch isn;t bent, mine had a peice cut out of it, so i replaced it and it closes flawlessy now