the first one looks pretty good, i love the dull winter colors, it gives a cool mood. the stop sign is a little distracting, but there's not much you can do about that unless you move to another location to take that picture, which may not have been a bad idea. (unless you feel like a creep, skulking around behind strangers, taking their pictures

) overall i think it's a pretty good capture, maybe just a little bit distracting with the stop sign and street sign.
2: doesn't do a lot for me, i'm not sure exactly what the subject is supposed to be.
3: might have had some potential but the noise is just way too much. the colors look very great and wintry, but i feel like the subject is falling off the frame, you could have used a little more of the flowers in there i think.
4: love the colors, love the way the rose looks and i like the shallow depth of field. not a huge fan of the blue flower it the bottom (am i too easily distracted???

)
overall i think you've got some good stuff here. you're finding some interesting things to take pictures of. just keep an eye on what else is around them and what you might want to either crop out or move around to get it out of frame. just my opinions, take them for what they're worth.