So, far you got a really great start I can see a lot of things that could be improved on your model.
Make sure your main screen reflects the same level of detail as in a reference image. From the angle and picture you provided it looks like a lot of the block aren’t connected and look very try unappealing. Also put more detail in the DS and screen. In some cases this would be just fine, but if your using a reference image or not I’ll try using one it’ll really improve the overall design of it.
I would try making the length of the screen have a more rectangle edge shape its style of realism you could also use meshes instead of the Roblox parts try to change the color where the volume control and game pak slot is to a more grey-ish color.
Maybe this image could give you a better idea on what I’m taking about.