Patrick that really is a great start.
Regarding M-8. Well whenever I have a chance to have a go at this one, I know your attempt would definitely beat mine, so even though I'm learning to sketch myself I'll offer views on yours. I agree, the edges look too sharp and there is too much light play. From what I remember (thru my scope), the light was more concentrated around the star cluster. I like your dark lanes and the shape of the neb, and also the use of different coloured shadings.
Regarding M-57. Too much light on the ring, so I would darken it, and the hole from what I remember is much smaller (?). I love the way you do the stars. Again, your sketch will no doubt outdo my first attempt at this one too.
It's easier for me to comment (I know) than having to actually do one of these sketches. So don't take my opinion on it solely. Others are more qualified. But I have learnt something critiquing your work - I get to learn how to do it because I am examining it so much, so your helping me!
Well done, keep them coming. I'm enjoying these sketches.
