Then add essential oils, one scent at a time.

You may use one scent, or create your own blends with a mix of scents.

Substitutes ~

Ambergris~ Cypress oil with a couple drops of Patchouli oil.
Bergamot Mint~ minty lemon fragrance ~ Lemon oil, Lemongrass oil, & Peppermint oil.
Copal~ piney lemon fragrance. N.American equivalent to Frankincense. Copal lacks Frank.'s bittersweet odor as it burns; Copal's scent never varies.
Sandalwood~ can use cedarwood as a sub

Here are a few recipes for you to try out until you get the hang of the different scents & how they compliment ( or don't) each other.

Use your nose as the judge on how much of each oil to use. The first oil mentioned should be the dominant scent, and lessen from there.

Patchouli, Sandalwood, Cinnamon

Rose, Jasmine, Ylang-Ylang

Sandalwood, Cinnamon, Orange, Rosemary

Lemon, Thyme, Peppermint,

Rose, Jasmine

Lemon, Eucalyptus

Orange, Eucalyptus

Rose, Vanilla, Ylang-Ylang

Rosemary, Lavender, Sage

Lavender, Eucalyptus

Bay, Lavender, Sage, Lemon (balm, grass, or verbena)

Rose, Lavender

Rose, Lavender, Ylang-Ylang

Lavender, Ylang-Ylang

Patchouli, Lavender

Bay & Eucalyptus

Cedar, Jasmine

Cedar, Bergamot

Ylang-Ylang, Clary Sage

Some say over-night(24 hours) is usually enough time to extract the plants natural oils enough to scent your base oil. If the scent isn't as strong as you'd like, add fresh botanicals & let soak again. Continue until you have the desired scent.

You'll need just enough base oil to cover the plant material you're using, then add about another TBsp. on top of that. Cover and store away in a dark place. Strain when done through cheesecloth & then bottle scented oil.

If you need to repeat the process for achieving a stronger scent, strain through cheesecloth, add fresh plants/herbs,etc.., then pour in the same base oil that you strained the plants out of. If you need to add a little more oil, another TBsp. should do. Then repeat process until you get your scent.

Another way