Some of my favorite crafrty tips for general hominess around the house. Embelish your current decor with dried flowers. Flowers compliment most any decor. Attach them with hot glue gun to baskets, picture frames, containers, mirrors, decorative linens, etc. Potpourri adds a homey feel anywhere.
Ribbons are a nice added touch.
Try to stick with a theme so it doesn't get busy. Use nature to compliment your decor. A vase of fresh flowers in the summer or a basket of pinecones and acorns in the fall and winter are a lovely added touch. For season specific home decor tips see indivisual holidays.