they look really good for a first batch.
I don't bother mixing my yeast (dry or fresh) with sugar and water. I crumble it into the flour, mix it about add a pinch of salt and then just add my water to the flour & yeast mix. I dislike adding sugar as it seems closer to the industrial methods used to create awful white bread. I also don't use warm water so no worry about killing the yeast (cold still works but slows the process) For me the slower the prove the tastier the bread.
Have a search for Richard Bertinet on line, the bloke revolutionized how I made bread (not kneading but folding and keeping a very high water content), very french, but very tasty with a fantastic crust.