Been at it for 3 hours..... Please help!

I genuinely want to know what you guys think？With the repid development of AI tools，is it still worth studying Photoshop？And I am an english beginner.If this paragraph has some grammar errors，i hope you can understand.

I follow several kpop groups and have always seen other people sharing wallpaper size images of the photos posted.
Would like to try making it myself as I have a ton that I want. Anyone here can advise how do I edit the photo to wallpaper size without cropping or losing quality or even make it 4K(?)

I am wanting to have my toddler photographed as each of the 4 Wiggles and put together on one canvas. My family member takes photos and does some photoshop. She and I decided it would be best to take my kid’s picture in one shirt and just use photoshop to change the colors.

We need to decide what color shirt he should wear for the photos. We have decided not to do yellow because the logo is yellow and it might be too hard to separate.

Can any of the other colors easily be turned yellow or should I just make him a white shirt with the logo on it?

Photoshop version 2026 (v27.10.0.26)

Camera Raw version 18.6

I have a couple of vacation photos that I like but my hair is a mess and friends and family hairs are also messy. I'm not too familiar with the latest PS tools since it's been years since I've used it. But I was wondering what's the best tool for things like styling bangs back up, fill in gaps, etc. Just throwing some examples: men's hair where the bangs fell down because of the wind or something, and I'd like to comb it back up.

I looked on youtube and there were some cool generative ai tutorials using the lasso tool. Is this the appropriate tool to use?

TIA!

Made this shirt with threshold and solid fill layers. Really liked how it came out.

Been obsessed with the shirt design medium over the summer and I’m nervous I’m getting too carried away. I feel like I’m putting every little graphic on a shirt these days…

(If you’ve seen this post before, it was originally on graphic design Reddit but was taken down due to being more of an artistic creation than design one. No hard feelings.)

I've never had this issue before and I'm not quite sure how to fix it (sorry for the bad photo, it was the best I could get to show the problem).

For some odd reason, my Photoshop Workspace will randomly switch between light and dark, which oversaturates the colors on the canvas and is making it impossible to color anything. Interestingly enough, the colors only change visually, so if I color pick it will be accurate to the "normal" version as opposed to the oversaturated one.

I've tried restarting Photoshop and my computer, but no dice. All my visual drivers are up to date as well. I haven't uninstalled and reinstalled Photoshop but I'm hoping there might be a way to fix this without doing so.

Please help if you can, thanks!

Value, material and hard-surface study created in Photoshop using the Pen tool and custom brushes.

Focused on capturing specular glass reflections, liquid translucency and stylized metal bevels.

Feedback and critiques are welcome!

I think it would be pretty sick if I could add these details but I have absolutely no idea where to start. I’m not very knowledgeable in photoshop as I’m spend most of my time in Lightroom. Any tips will be very appreciated 🙏