Form is your best friend when you have it and your worst enemy when you're lacking and until you have at least a reasonably consistent form, accuracy is hard to find. I spend at least one practice session each week standing 3' in front of a blank target, eyes closed. Shoot, reach forward and pull, and do it again and again focusing entirely on one form aspect each session. Might be back tension or rotating my elbow, might be anchor, might be release but that's the total focus for that session. Once you have that "feel" ingrained you'll find that the groups tighten exponentially at all ranges. In the abscence of a coach a video camera is a great tool to check your form, it lets you step back and look at yourself, see what you're doing right or wrong.
Also, I don't pace off, I don't measure, I just shoot and let practice and memory govern the sight picture. Start off with a big backstop and a paperplate and work until all of your arrows are on that target no matter what the distance. Then put up a smaller target and do it again.
Stump shooting and roving are great practice but archery is hunting for me and my "stump" is a deer-sized feedbag stuffed with clothes, hanging from a picket in the middle of the pasture. I walk 360 around it at whatever distance, stop and shoot. There are no formal marks or aiming aids on it. I use the same things I'd use on a deer...a crease, a darker spot, whatever I can focus on that will let me put an arrow through the boiler room.
Good luck to ya!