You've pretty much hit a plateau. It's probably not going to be 'easy' from here on out.
Your BMR has dropped along with your weight. Two options: drop your calorie intake or up your calorie usage. You could always combine those two, but I'd rather go with upping my calorie usage.
If you want to get chiseled without bulking you'll have to up your reps and drop the weight a little. Instead of doing like 3 sets of 15 reps, think more like 3 sets of 20 or even 30 reps.
Nice stretch marks by the way.
You should see mine. I have a few (more like a dozen) that run from my arm pits down to just above my elbows.
