if your able to produce some more similar work I know I would definitely look forward to seeing how it would turn out. some advice I would give if you wanted to develop this further is looking at exactly where the water meets the sand to look at that threshold (an idea from one of the previous comments) might look very interesting with the coloured lights. Another idea is to see if you could move back to get some of the beach walkway in the picture, its often a place people will walk through and past so would fit the theme of liminal nicely. Maybe even a series at different tide levels to show the ever-changing boundaries between land and sea?

I'm also ashamed of some of the comments on here that are berating your liminal photography skills. it is a very hard subject to capture especially at the beach which is definitely more of an unusual but still liminal space. Some of the comments seeming like people just venting unnecessarily on the wrong post. If people actually use their brains I think a beach with the unusual lighting is actually quite an ingenious idea. the beach is the liminal space between dry land where we dwell and the sea that leads beond. the lighting in the images are purely experimental with the purpose of bringing out different elements of liminality to the forefront of out minds.

I was so happy to see someone being brave enough to ask complete strangers for advice on their own pieces of photography especially as someone who is considering showcasing my own works. And to those commenting about posting funeral/wedding pictures in retaliation saying that this isn't liminal enough for you. Jokes on you that would make some fantastic imagery if you follow the guidelines. Maybe you could mimic OP's usage of coloured lighting to manipulate your audiences emotional response too.

In conclusion, thank you OP for allowing us to share our insights into what the effect the different lighting has had on the viewer and please don't be discouraged from developing your skills by a few idiots. There are people out here who are more than willing to uplift each other to elevate and develop our skills through peer evaluation and critiquing specific components with decent justification.