Could I have opinions on these please?

[InTheCludgie]

I've been debating recently about selling art online, probably starting off with a few prints and seeing how I go. Im a bit rusty as I haven't done much recently so would need to refresh myself and practice a bit. My area of interest is architecture, I've added a few pics of my work and would love honest opinions. Are they worth trying to sell? Or just worthless trash? Thanks!

I like the two coloured ones - I do think the middle one looks more like a sketch than a finished piece based on the medium. I don’t think any are worthless trash.

Have you considered starting an Instagram account or similar to build up some followers / advertise?

Thanks for taking a look at these, really appreciate your feedback! Now to look into printing and where to sell...

I think if you want to do more realistic stuff then you will need to work your pictures a lot more to make them more finished. Decide which part of the scene is the focus and work a lot more detail and contrast into that part.
If you decide to go with images that are less realistic and more stylized then you can do less detail but it needs to be clear what your aim is with it.
I am no expert but I like watching YouTube videos posted by art tutors and critics and I think you can pick up a lot from those. (Also very relaxing to watch) so I recommend looking at those.
I like the first image best. The colours

are good and it’s clearer to me what the focus is.

They aren't great.

For selling online, you might want to check websites for print on demand art. No initial outlay and your feedback comes in the form of sales.

Thanks for the honesty, I will look into some YouTube videos. I could use advice on certain aspects of creating artwork, I tend to just sit down, draw and see what happens (which is probably evidenced in my links!). I hope to have more time soon to really focus on improving this. Thanks again!