I posted a while back a tip about using one of those knit oven gloves which resist high temperatures to press difficult small seams and corners. You can press right over your finger with one of these on. This tip is an update - the silicone rubber oven gloves are really useful when you are using steam on a seam and need to hold it open with the other hand. Polyester fabrics often close up on you as you try to press them and need holding open right next to the iron point. Slipping a silicone glove on your free hand lets you hold the seam where you want it and give it a shot of steam close to your protected finger. You can also pat down the still hot seam with the edge of your hand.