I am trying to get on this website, or a similar one, to sell some of my images to support this expensive hobby.
However, I just tried to upload a couple images and they were rejected due to being to small in file size. The images were shot with a 400D and minimal PP was applied. However, I resaved the files as JPEG instead of TIFF and lost a lot of data.
1. Are there any websites that will take these photos?
2. What can I do in the future to avoid this happening?
3. We have a local artisan's guild that I thought about joining and just selling prints there. Does anyone here do this? This also might be a bit more of a commitment than I am wanting as I am just a hobbyist looking to offset costs of my wish list. 
I now shoot with a 30D and I guess I need to start shooting in RAW and saving as TIFF. Would this help?
Man this kills me because a couple of those shots were literally a once in a lifetime chance...
Any help would be MUCH appreciated.
