Congrats, bro!
Welcome to the world of self-administration. I never had the luxury of having anyone inject my steroids for me, I always had to rely on myself. Even though my older bro got me into the scene, and showed my how to do a glute shot, he made me do my own. Told me if I could'nt shoot myself then I had no business using, also he went to college in another state so we both knew he would'nt be around to do the injections.
My first injection was a very scary moment. i'd always had a fear of needles before that. I was shaking and was sure I'd hit an artery or it would hurt a lot... it took forever for me to simply penetrate the skin, and I nearly threw up as I slid the needle all the way into the muscle, feeling it glide first through the fatty tissue and then into the muscle. Fortunately I was able to remember to aspirate, then completed the injection and the rest is history. Now when I pin myself its like popping a pill. Unlike my bro, I will help others by injecting them (a couple people have me do all their injections and actually pay me to do it) because they are too afraid of doing it themselves. They just can't believe I can inject stuff with zero fear and total control.
It will soon become second nature to you and you might even start liking it. I know I sometimes look forward to pinning myself, to the point at times that I'll split up my long acting stuff (like test enanthate) into 2 or 3 seperate injections instead of doing it just once a week. Right now I'm being normal though, just pinning as needed (generally twice a week).