I think this is a well-done landscape, as simple as it is. Not in execution; I mean, it is lots of rocks. But even rocks have variety, and your scenery shows it.
There seems to be a strong contrast between the left part of the scenery, which has more dark/shadowed areas, and the right part, which is lighter. But also, there is a contrast in focus... since the left part is mostly rocky terrain with three small people; and the right part, which has the strange giant.
If I might offer a suggestion... I think that the rocky beach color could be a bit warmer, just to add some to the contrast. But, just a little bit.
The giant's arms are quite a bit longer than expected... then again, I shall not question the anatomy of a giant. (Please don't crush me, big sir.)
You did great here, and your art piqued my interest. Hope to see more 👍