Are you continuing to hold the W (or arrow) button down when you jump?
Depending on the situation you may find that either an extreme high or low camera angle may help.
You can use a gamepad, etc, with the PC version of the game (
pc 360 controller help).
floating platforms (minor spoilers)
This game punishes those with poor eye-hand skillsWhere are you, exactly? The ledges by the teleporter shrine you should be able to jump over to the second ledge. It's been awhile since I went through that part, but I think there was another ledge there (by the entrance?) that you can not get to from the ground, and need to jump down to from above (or maybe I just missed the ledge when I first went through).
If you edge around the left side of the main gate, you can jump across into that section, and continue from there (unless you are already past that point).
Welcome to the forum.
