Hey jammer, welcome to the forums!
I always love to see new Lemmings levels, and your levels were no exception. I gave them a go a few days ago, and I found them quite pleasant for your first levels.
I realized immediately what I have to do in
Click Right In Tick, but that's a nice trick that doesn't appear too often in custom levels. Though I'd guess that it won't surprise the player anymore in the fifth level, where you set the same trick again. :b I love how you filled lots of space with the snow, that makes the entire landscape look appealing.
Decoration was quite successful in
Bomb Your Own Hole, too. The solution is a bit too repetitive in my opinion, but fortunately there's this detail:
The chains seem to show the spots for bomber assignments.
Crystal Clearance was a nice level with few skills. You might want to use "no overwrite" option for exit, so it doesn't seem to be on terrain, if you don't like it in that way (I don't). The same issue is in the fourth level.
Moss And Iron is my clear favourite level of yours, every skill has to be placed wisely, I really enjoyed this level.
As the idea in
Burn Bridges Behind is okay, it's a little too repetitive like the second level. Also, there's no steel at all in this level, and it deceives the player, as the bombers just work flawlessly on the steel.
Here are my solutions for your levels in case you're interested to see them. I definitely look forward to your upcoming levels!
Also, I solved ONML Crazy2 in exactly the same way as you when I was a kid.