Do a simple american flatbow or meare-heath style bow, overbuilt. Hickory is a great wood for both. Get Traditional Bowyer's Bible I (or all 4), and read it through, get started and post on here for the good folks here to help you along. If that wood would make a shooter, the Gang will help you get it there.
That's the take it slow answer. Short answer: hickory flatbow, 64-68" long. 4" handle (you can glue on a riser from the cut-off) 1.25" wide and 1.5" deep. Fades transition from handle to limb by widening to 1.75" and thinning to about 5/8" (leave a hair more for tillering). Limbs stay 1.75" wide for about 1/2 the limb length, then narrow to 1/2 to 3/8" nocks. The parallel 1.75" section should thickness taper down to about 1/2 where the width taper begins, then leave it the same thickness to the tips. Tiller away and enjoy.
Look at plenty of pics of good bows and note especially how the fades are done. The width should get to 1.75" about 1/8-1/4" BEFORE the thickness gets down to 5/8" (as you move toward the tip, that is). Hope that makes sense.