Hey man, your files will look a lot nicer if you save them in .png format. If you insist on savinging in .jpg, make sure you set the quality level all the way up. Lower quality .jpgs put artifacts on the pictures as a sacrifice for a smaller file size. When you save your tiles in low quality, you are not doing them justice (and it can be difficult to blend off of a tile with artifacts). In my oppinion, your artwork is getting much better and I would like to see your files saved in better quality. Keep the good work!

you seem to have worked most of your borders in, but the one below (bwuah, mine) was cut off immediately. i can think of a million different things you could of pulled that stuff up to... and you've become quite critical when it comes to others tiles. you say you comment on theirs because others are commenting on yours in that manner... though fixing it in your own tiles instead of pointing that same fault out to others would seem smarter, and kinder. i didn't vote too low, though. the guy reminds me of the default swimming in the sims...lol! (er, i guess i'm the only one to find that funny :P)
kyle