interior painting wall with light on sideview

I have an 18 foot entryway wall that I wanted to repaint due to a past poor repaint job over a section where the drywall taping was redone. I thought that repainting the whole wall needed to be done. The wall has alot of light on it from a window and the view of the wall is typically from the side which is unforgiving. I used the original paint which is flat but seems somewhat like eggshell when viewing from the side. I rolled the paint with a sponge roller. There are small sections that are noticeable now and I don't know if I need to paint a second coat, if I need a better roller, or if it will always be visable unless I spray, which is difficult on a 18 foot hight wall. The sections that stand out look flat from the side and most of the wall looks eggshell. When I look from the other direction the small sections that stuck out as flat from the other direction now look egg shell. Do I do a second coat? Get a better quality roller? Or is a spray the only way for uniformity?.

 

I had a similar problem with a hallway that I painted. Eggshell finishes do not look unigorm when viewed from a slight angle from the wall. This is what I did. I also used a sponge roller and I painted the wall again giving it a very light coat but I only painted vertical strokes the entire height of the wall and I kept a wet edge between strokes of roller. It evened out my gloss quite a bit. Although it was not perfect, it looked prety good.

 

Painter, I tried what you said about using vertical strokes from top to bottom. I used a better roller this time. NOw you can see that I made vertical strokes. I went top to bottom and then did the next row and then went back slightly to finish my overlap before going to the next row. It looks like what is showing might be where I went went back to finish the overlap or where it was lighter paint. I also used some up and down strokes when I got lower and had less paint on the roller and these seem to have showed more. Do I need to do it again and only use top to bottom strokes and make sure I have more paint? I was afraid I would be left with roller edges of more paint.