First, I think it is neat that anybody can submit banners, not just a few select folk.
I tried my hand yesterday for a second time trying to make one. I have the actual making of the banners down. I take photos with the highest resolution. I just checked, they come out 4608 x 3072 before any editing. I use GIMP. After choosing a possible photo, I crop, going the length of the full image. Then I go to Scale Image; the short side, I change to 150. Most often what I run into is a photo not long enough. So...
What I am thinking is I need some assistance with the actual photo taking. I've not zoomed in as close, but when I go to view it at 100%, I find my photos are not as crisp as I'd like. And zooming in to focus on a butterfly or bee does not work for a banner. :)
Here is one I did yesterday, but after reading some of the posts in this thread, 1200 wide may not be ideal. And overall I am not real happy with it, though I like the plant. I shrank it again to fit into the post.
I did not read through every page on this post, so I might have missed something. I would appreciate any help.
Thank you.