in addition to breezer's comments.
if you remove the textured paper, fill any voids and repaint the wall. The whole room will appear larger as the removal of texture tends to visually push the wall away as there are no details for your eye to focus on.
Basically, excluding unframed mirrors, the more objects on the wall the closer it appears, the flatter and more uncluttered the wall is the further away it appears.
When buying the paint carefully select the finish, eggshell or matt are best for walls as they hide flaws and the muted colours ( beiges etc..) increase the recession effect.
Measure the wall area, calculate the paint requirement based upon the manufacturers recommendation. I personally buy I extra 2.5 litre tin as next years touch up paint. Nothing worse than a nicely painted wall that gets marked for which you have no spare paint of the correct batch number.
Suggested painting sequence.
Ceiling, ceiling rose, cornice, walls, skirting, doors.